Vulnerability-Lookup

GHSA-89MQ-R3Q6-9Q3Q

Vulnerability from github – Published: 2022-05-24 17:25 – Updated: 2025-05-01 18:31

Details

Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2020-11993"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-08-07T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers.",
  "id": "GHSA-89mq-r3q6-9q3q",
  "modified": "2025-05-01T18:31:41Z",
  "published": "2022-05-24T17:25:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11993"
    },
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    },
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    },
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    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY"
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    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202008-04"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20200814-0005"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4458-1"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4757"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
    },
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      "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"
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    },
    {
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      "url": "https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-8G74-32FG-5GHC

Vulnerability from github – Published: 2024-05-02 12:30 – Updated: 2025-02-13 18:32

Details

Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in Apache APISIX when using forward-auth plugin.This issue affects Apache APISIX: from 3.8.0, 3.9.0.

Users are recommended to upgrade to version 3.8.1, 3.9.1 or higher, which fixes the issue.

Severity

6.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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{
  "affected": [],
  "aliases": [
    "CVE-2024-32638"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-02T10:15:08Z",
    "severity": "MODERATE"
  },
  "details": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)\u00a0vulnerability in Apache APISIX when using `forward-auth` plugin.This issue affects Apache APISIX: from 3.8.0, 3.9.0.\n\nUsers are recommended to upgrade to version 3.8.1, 3.9.1 or higher, which fixes the issue.\n\n",
  "id": "GHSA-8g74-32fg-5ghc",
  "modified": "2025-02-13T18:32:28Z",
  "published": "2024-05-02T12:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-32638"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/ngvgxllw4zn4hgngkqw2o225kf9wotov"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/05/02/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-8H4C-X2WG-6XP8

Vulnerability from github – Published: 2026-09-15 19:53 – Updated: 2026-09-15 19:53

Summary

Http4s Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)

Details

Summary

Ember's HTTP/1.1 request parser does not reject a message that carries both a Transfer-Encoding and a Content-Length header. RFC 9112 §6.1 requires a server to treat such a message as a framing error and close the connection. An intermediary that follows the RFC's CL-strip-and-forward path (or that prioritises Content-Length) will frame the body differently from Ember, enabling HTTP request smuggling (CL.TE).

Impact

Server

Request smuggling when ember-server is an origin behind an intermediary that forwards both headers over a keep-alive backend connection and frames by Content-Length while Ember frames by chunked:

Front-end security bypass: the smuggled request reaches paths the intermediary's ACL/auth layer would have blocked, with attacker-chosen method and headers.
Cross-user request hijack: a dangling smuggled prefix concatenates with the next victim's request on the shared backend socket, capturing its headers.
Cache poisoning: the smuggled response is associated with the next request key in a caching proxy.

Client

ember-client shares the same parser on the response path. An upstream that sends both headers can desync a pooled client connection. This requires a malicious or compromised upstream.

Preconditions

Unauthenticated remote attacker (server)
ember-server as origin behind a keep-alive intermediary
Intermediary forwards a request carrying both Transfer-Encoding and Content-Length (RFC says it MAY reject; many forward) and frames by Content-Length
Malicious or compromised upstream (client)

Workarounds

Intermediary strictly rejects requests carrying both Transfer-Encoding and Content-Length
Intermediary buffers and re-encodes request bodies
Disable backend keep-alive between the intermediary and Ember

Severity

9.2 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.23.34"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.http4s:http4s-ember-core_2.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.23.35"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.23.34"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.http4s:http4s-ember-core_2.13"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.23.35"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.23.34"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.http4s:http4s-ember-core_3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.23.35"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.0.0-M46"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.http4s:http4s-ember-core_2.13"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0-M1"
            },
            {
              "fixed": "1.0.0-M47"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.0.0-M46"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.http4s:http4s-ember-core_3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0-M1"
            },
            {
              "fixed": "1.0.0-M47"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-69204"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-15T19:53:44Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "## Summary\n\nEmber\u0027s HTTP/1.1 request parser does not reject a message that carries both a\n`Transfer-Encoding` and a `Content-Length` header. RFC 9112 \u00a76.1 requires a\nserver to treat such a message as a framing error and close the connection.\nAn intermediary that follows the RFC\u0027s CL-strip-and-forward path (or that\nprioritises `Content-Length`) will frame the body differently from Ember,\nenabling HTTP request smuggling (CL.TE).\n\n## Impact\n\n### Server\n\nRequest smuggling when ember-server is an origin behind an intermediary that\nforwards both headers over a keep-alive backend connection and frames by\n`Content-Length` while Ember frames by chunked:\n\n- Front-end security bypass: the smuggled request reaches paths the\n  intermediary\u0027s ACL/auth layer would have blocked, with attacker-chosen\n  method and headers.\n- Cross-user request hijack: a dangling smuggled prefix concatenates with the\n  next victim\u0027s request on the shared backend socket, capturing its headers.\n- Cache poisoning: the smuggled response is associated with the next request\n  key in a caching proxy.\n\n### Client\n\nember-client shares the same parser on the response path. An upstream that\nsends both headers can desync a pooled client connection. This requires a\nmalicious or compromised upstream.\n\n## Preconditions\n\n- Unauthenticated remote attacker (server)\n- ember-server as origin behind a keep-alive intermediary\n- Intermediary forwards a request carrying both `Transfer-Encoding` and\n  `Content-Length` (RFC says it MAY reject; many forward) and frames by\n  `Content-Length`\n- Malicious or compromised upstream (client)\n\n## Workarounds\n\n- Intermediary strictly rejects requests carrying both `Transfer-Encoding`\n  and `Content-Length`\n- Intermediary buffers and re-encodes request bodies\n- Disable backend keep-alive between the intermediary and Ember",
  "id": "GHSA-8h4c-x2wg-6xp8",
  "modified": "2026-09-15T19:53:44Z",
  "published": "2026-09-15T19:53:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/http4s/http4s/security/advisories/GHSA-8h4c-x2wg-6xp8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/http4s/http4s/commit/9feaf8677951a52af906ae9664ff6f0543d9d810"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/http4s/http4s"
    },
    {
      "type": "WEB",
      "url": "https://github.com/http4s/http4s/releases/tag/v0.23.35"
    },
    {
      "type": "WEB",
      "url": "https://github.com/http4s/http4s/releases/tag/v1.0.0-M47"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Http4s Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)"
}

GHSA-8M85-WQG7-C529

Vulnerability from github – Published: 2026-07-14 03:31 – Updated: 2026-09-01 21:20

Summary

SAP Approuter Vulnerable to HTTP Request Smuggling

Details

Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.

Severity

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Show details on source website

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To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@sap/approuter"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20.10.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-27690"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-01T21:20:31Z",
    "nvd_published_at": "2026-07-14T01:16:17Z",
    "severity": "CRITICAL"
  },
  "details": "Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.",
  "id": "GHSA-8m85-wqg7-c529",
  "modified": "2026-09-01T21:20:31Z",
  "published": "2026-07-14T03:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27690"
    },
    {
      "type": "WEB",
      "url": "https://me.sap.com/notes/3720138"
    },
    {
      "type": "WEB",
      "url": "https://url.sap/sapsecuritypatchday"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SAP Approuter Vulnerable to HTTP Request Smuggling"
}

GHSA-8P2Q-73GC-FXQ5

Vulnerability from github – Published: 2022-05-24 19:19 – Updated: 2022-05-24 19:19

Details

Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox < 91.0.1 and Thunderbird < 91.0.1.

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-29991"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-11-03T01:15:00Z",
    "severity": "HIGH"
  },
  "details": "Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox \u003c 91.0.1 and Thunderbird \u003c 91.0.1.",
  "id": "GHSA-8p2q-73gc-fxq5",
  "modified": "2022-05-24T19:19:37Z",
  "published": "2022-05-24T19:19:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29991"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1724896"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2021-37"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-8PXM-658R-R9J2

Vulnerability from github – Published: 2024-03-20 15:32 – Updated: 2024-08-05 21:31

Details

An issue was discovered in Elspec G5 digital fault recorder versions 1.1.4.15 and before. Unauthenticated memory corruption can occur in the HTTP header parsing mechanism.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-22081"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444",
      "CWE-644"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-20T05:15:45Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered in Elspec G5 digital fault recorder versions 1.1.4.15 and before. Unauthenticated memory corruption can occur in the HTTP header parsing mechanism.",
  "id": "GHSA-8pxm-658r-r9j2",
  "modified": "2024-08-05T21:31:18Z",
  "published": "2024-03-20T15:32:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-22081"
    },
    {
      "type": "WEB",
      "url": "https://www.elspec-ltd.com/support/security-advisories"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-8QPW-XQXJ-H4R2

Vulnerability from github – Published: 2024-01-29 22:30 – Updated: 2025-11-03 22:35

Summary

aiohttp's HTTP parser (the python one, not llhttp) still overly lenient about separators

Details

Summary

Security-sensitive parts of the Python HTTP parser retained minor differences in allowable character sets, that must trigger error handling to robustly match frame boundaries of proxies in order to protect against injection of additional requests. Additionally, validation could trigger exceptions that were not handled consistently with processing of other malformed input.

Details

These problems are rooted in pattern matching protocol elements, previously improved by PR #3235 and GHSA-gfw2-4jvh-wgfg:

The expression HTTP/(\d).(\d) lacked another backslash to clarify that the separator should be a literal dot, not just any Unicode code point (result: HTTP/(\d)\.(\d)).
The HTTP version was permitting Unicode digits, where only ASCII digits are standards-compliant.
Distinct regular expressions for validating HTTP Method and Header field names were used - though both should (at least) apply the common restrictions of rfc9110 token.

PoC

GET / HTTP/1ö1 GET / HTTP/1.𝟙 GET/: HTTP/1.1 Content-Encoding?: chunked

Impact

Primarily concerns running an aiohttp server without llhttp: 1. behind a proxy: Being more lenient than internet standards require could, depending on deployment environment, assist in request smuggling. 2. directly accessible or exposed behind proxies relaying malformed input: the unhandled exception could cause excessive resource consumption on the application server and/or its logging facilities.

Patch: https://github.com/aio-libs/aiohttp/pull/8074/files

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "aiohttp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.9.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-23829"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-01-29T22:30:07Z",
    "nvd_published_at": "2024-01-29T23:15:08Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nSecurity-sensitive parts of the *Python HTTP parser* retained minor differences in allowable character sets, that must trigger error handling to robustly match frame boundaries of proxies in order to protect against injection of additional requests. Additionally, validation could trigger exceptions that were not handled consistently with processing of other malformed input.\n\n### Details\nThese problems are rooted in pattern matching protocol elements, previously improved by PR #3235 and GHSA-gfw2-4jvh-wgfg:\n\n1. The expression `HTTP/(\\d).(\\d)` lacked another backslash to clarify that the separator should be a literal dot, not just *any* Unicode code point (result: `HTTP/(\\d)\\.(\\d)`).\n\n2. The HTTP version was permitting Unicode digits, where only ASCII digits are standards-compliant.\n\n3. Distinct regular expressions for validating HTTP Method and Header field names were used - though both should (at least) apply the common restrictions of rfc9110 `token`.\n\n### PoC\n`GET / HTTP/1\u00f61`\n`GET / HTTP/1.\ud835\udfd9`\n`GET/: HTTP/1.1`\n`Content-Encoding?: chunked`\n\n### Impact\nPrimarily concerns running an aiohttp server without llhttp:\n 1. **behind a proxy**: Being more lenient than internet standards require could, depending on deployment environment, assist in request smuggling.\n 2. **directly accessible** or exposed behind proxies relaying malformed input: the unhandled exception could cause excessive resource consumption on the application server and/or its logging facilities.\n\n-----\n\nPatch: https://github.com/aio-libs/aiohttp/pull/8074/files",
  "id": "GHSA-8qpw-xqxj-h4r2",
  "modified": "2025-11-03T22:35:14Z",
  "published": "2024-01-29T22:30:07Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-8qpw-xqxj-h4r2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-gfw2-4jvh-wgfg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-23829"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aio-libs/aiohttp/pull/3235"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aio-libs/aiohttp/pull/8074"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aio-libs/aiohttp/pull/8074/files"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aio-libs/aiohttp/commit/33ccdfb0a12690af5bb49bda2319ec0907fa7827"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/aio-libs/aiohttp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2024-26.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ICUOCFGTB25WUT336BZ4UNYLSZOUVKBD"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XXWVZIVAYWEBHNRIILZVB3R3SDQNNAA7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "aiohttp\u0027s HTTP parser (the python one, not llhttp) still overly lenient about separators"
}

GHSA-8QQM-FP2Q-V734

Vulnerability from github – Published: 2026-07-17 21:49 – Updated: 2026-09-25 17:03

Summary

Skipper: Incomplete fix for CVE-2026-50197: an oversized body can bypass OPA deny-on-presence Rego policies

Details

Summary

A wrong policy can be an open door. You have to check input.attributes.request.http.truncated_body in your policy.

Description

Incomplete fix for CVE-2026-50197: an oversized declared-Content-Length body still hands OPA an empty parsed_body, so deny-on-presence Rego policies fail OPEN while the full payload reaches upstream.

The CVE-2026-50197 fix (commit 3152f3b0, PR #4041, v0.26.10) substituted expectedSize = maxBodyBytes only when req.ContentLength < 0 (chunked / HTTP/2 without content-length). But when a request declares a Content-Length larger than maxBodyBytes, expectedSize > maxBodyBytes, the body-extraction if is skipped entirely, and ExtractHttpBodyOptionally returns rawBodyBytes = nil — so OPA evaluates an empty parsed_body, while the full forbidden payload still flows to the upstream. A deny-on-presence policy (default allow = true; allow = false if input.parsed_body.<forbidden>) — the exact Rego shape the advisory describes — fails OPEN. The fix's own comment reasons only about ContentLength == -1; the oversized branch was never considered, and the added PoC test only covers small bodies.

Affected code

filters/openpolicyagent/openpolicyagent.go ExtractHttpBodyOptionally: the expectedSize <= maxBodyBytes gate lets an oversized declared body fall through to return req.Body, nil, func() {}, nil (OPA sees an empty document).
Corroborated by Skipper's own unit test "Read body exhausting max bytes" ({ "welcome": "world" }, maxBodySize: 5 → bodyInPolicy: "").

Steps to reproduce

See attached docker-compose.yml (official golang image) + setup.sh + exploit.sh, which run a real Skipper proxy (proxytest) with a real OPA control plane (opasdktest), WithMaxRequestBodyBytes(32), policy allow = false if input.parsed_body.action == "delete", route * -> opaAuthorizeRequestWithBody("test") -> upstream: - {"action":"delete"} (19B ≤ 32) → 403 (denied). - {"action":"delete","pad":"X..64"} (> 32) → 200, upstream received the full body (BYPASS). - small chunked {"action":"delete"} → 403 (positive control: the original CVE is fixed).

(Library-tier: validated via Skipper's real proxy test harness, not a deploy of the official image; benign oracle = status diff + upstream-received body; no RCE.)

Impact

Deployments authorizing on request-body content via opaAuthorizeRequestWithBody + deny-on-presence Rego can be bypassed by inflating the request body past -open-policy-agent-max-request-body-size (default 1 MB); the full payload still reaches the upstream.

Mitigation

Document how policy owners should block requests with oversized body.

Example deny by default and use "allow if" no oversized body:

default allow := false

allow if {
    input.attributes.request.http.truncated_body == false
    # ... body-based conditions
}

Example allow by default and use "deny if" an oversized body:

default deny := false

deny if {
    input.attributes.request.http.truncated_body == true
    # ... body-based conditions
}

Documentation is published by https://github.com/zalando/skipper/releases/tag/v0.27.26

Credit

Reported as part of an incomplete-patch measurement study (responsible disclosure).

Severity

8.2 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/zalando/skipper"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.27.26"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-65838"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-17T21:49:48Z",
    "nvd_published_at": "2026-09-14T20:16:49Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nA wrong policy can be an open door. \nYou have to check `input.attributes.request.http.truncated_body` in your policy.\n\n### Description\n\nIncomplete fix for CVE-2026-50197: an oversized declared-`Content-Length` body still hands OPA an empty `parsed_body`, so deny-on-presence Rego policies fail OPEN while the full payload reaches upstream.\n\nThe CVE-2026-50197 fix (commit `3152f3b0`, PR #4041, v0.26.10) substituted `expectedSize = maxBodyBytes`\nonly when `req.ContentLength \u003c 0` (chunked / HTTP/2 without content-length). But when a request declares a\n`Content-Length` larger than `maxBodyBytes`, `expectedSize \u003e maxBodyBytes`, the body-extraction `if` is\nskipped entirely, and `ExtractHttpBodyOptionally` returns `rawBodyBytes = nil` \u2014 so OPA evaluates an empty\n`parsed_body`, while the full forbidden payload still flows to the upstream. A deny-on-presence policy\n(`default allow = true; allow = false if input.parsed_body.\u003cforbidden\u003e`) \u2014 the exact Rego shape the\nadvisory describes \u2014 fails OPEN. The fix\u0027s own comment reasons only about `ContentLength == -1`; the\noversized branch was never considered, and the added PoC test only covers small bodies.\n\n### Affected code\n\n- `filters/openpolicyagent/openpolicyagent.go` `ExtractHttpBodyOptionally`: the\n  `expectedSize \u003c= maxBodyBytes` gate lets an oversized declared body fall through to\n  `return req.Body, nil, func() {}, nil` (OPA sees an empty document).\n- Corroborated by Skipper\u0027s own unit test \"Read body exhausting max bytes\" (`{ \"welcome\": \"world\" }`,\n  `maxBodySize: 5` \u2192 `bodyInPolicy: \"\"`).\n\n### Steps to reproduce\n\nSee attached `docker-compose.yml` (official `golang` image) + `setup.sh` + `exploit.sh`, which run a real\nSkipper proxy (`proxytest`) with a real OPA control plane (`opasdktest`),\n`WithMaxRequestBodyBytes(32)`, policy `allow = false if input.parsed_body.action == \"delete\"`, route\n`* -\u003e opaAuthorizeRequestWithBody(\"test\") -\u003e upstream`:\n- `{\"action\":\"delete\"}` (19B \u2264 32) \u2192 **403** (denied).\n- `{\"action\":\"delete\",\"pad\":\"X..64\"}` (\u003e 32) \u2192 **200**, upstream received the full body (BYPASS).\n- small chunked `{\"action\":\"delete\"}` \u2192 **403** (positive control: the original CVE is fixed).\n\n(Library-tier: validated via Skipper\u0027s real proxy test harness, not a deploy of the official image; benign\noracle = status diff + upstream-received body; no RCE.)\n\n### Impact\n\nDeployments authorizing on request-body content via `opaAuthorizeRequestWithBody` + deny-on-presence Rego\ncan be bypassed by inflating the request body past `-open-policy-agent-max-request-body-size` (default\n1 MB); the full payload still reaches the upstream.\n\n### Mitigation\n\nDocument how policy owners should block requests with oversized body.\n\nExample deny by default and use \"allow if\" no oversized body:\n```rego\ndefault allow := false\n\nallow if {\n    input.attributes.request.http.truncated_body == false\n    # ... body-based conditions\n}\n```\n\nExample allow by default and use \"deny if\" an oversized body:\n```rego\ndefault deny := false\n\ndeny if {\n    input.attributes.request.http.truncated_body == true\n    # ... body-based conditions\n}\n```\n\nDocumentation is published by https://github.com/zalando/skipper/releases/tag/v0.27.26\n\n### Credit\n\nReported as part of an incomplete-patch measurement study (responsible disclosure).",
  "id": "GHSA-8qqm-fp2q-v734",
  "modified": "2026-09-25T17:03:31Z",
  "published": "2026-07-17T21:49:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zalando/skipper/security/advisories/GHSA-8qqm-fp2q-v734"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65838"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zalando/skipper/commit/2cfceabaa6ff0af65b312dcb9bcbe84691b9d507"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/zalando/skipper"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zalando/skipper/releases/tag/v0.27.26"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zalando/skipper/releases/tag/v0.27.35"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Skipper: Incomplete fix for CVE-2026-50197: an oversized body can bypass OPA deny-on-presence Rego policies"
}

GHSA-8V4X-MGVP-P658

Vulnerability from github – Published: 2026-03-27 18:31 – Updated: 2026-06-11 00:32

Summary

Undertow is Vulnerable to HTTP Request/Response Smuggling

Details

A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks, potentially bypassing security controls and accessing unauthorized resources.

Severity

8.7 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.undertow:undertow-parent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.3.23.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-28368"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-31T23:14:15Z",
    "nvd_published_at": "2026-03-27T17:16:27Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks, potentially bypassing security controls and accessing unauthorized resources.",
  "id": "GHSA-8v4x-mgvp-p658",
  "modified": "2026-06-11T00:32:03Z",
  "published": "2026-03-27T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28368"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:25125"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:25126"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-28368"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2443261"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/undertow-io/undertow"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Undertow is Vulnerable to HTTP Request/Response Smuggling"
}

GHSA-8VHQ-594P-R648

Vulnerability from github – Published: 2022-05-14 01:04 – Updated: 2022-05-14 01:04

Details

The net/http library in net/http/transfer.go in Go before 1.4.3 does not properly parse HTTP headers, which allows remote attackers to conduct HTTP request smuggling attacks via a request with two Content-length headers.

Severity

9.8 (Critical)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2015-5740"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-10-18T20:29:00Z",
    "severity": "CRITICAL"
  },
  "details": "The net/http library in net/http/transfer.go in Go before 1.4.3 does not properly parse HTTP headers, which allows remote attackers to conduct HTTP request smuggling attacks via a request with two Content-length headers.",
  "id": "GHSA-8vhq-594p-r648",
  "modified": "2022-05-14T01:04:30Z",
  "published": "2022-05-14T01:04:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-5740"
    },
    {
      "type": "WEB",
      "url": "https://github.com/golang/go/commit/300d9a21583e7cf0149a778a0611e76ff7c6680f"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1250352"
    },
    {
      "type": "WEB",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167997.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168029.html"
    },
    {
      "type": "WEB",
      "url": "http://rhn.redhat.com/errata/RHSA-2016-1538.html"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/oss-sec/2015/q3/237"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/oss-sec/2015/q3/292"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/oss-sec/2015/q3/294"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

GHSA-89MQ-R3Q6-9Q3Q

GHSA-8G74-32FG-5GHC

GHSA-8H4C-X2WG-6XP8

Summary

Impact

Server

Client

Preconditions

Workarounds

GHSA-8M85-WQG7-C529

GHSA-8P2Q-73GC-FXQ5

GHSA-8PXM-658R-R9J2

GHSA-8QPW-XQXJ-H4R2

Summary

Details

PoC

Impact

GHSA-8QQM-FP2Q-V734

Summary

Description

Affected code

Steps to reproduce

Impact

Mitigation

Credit

GHSA-8V4X-MGVP-P658

GHSA-8VHQ-594P-R648

Mitigation

Mitigation

Mitigation

Mitigation

CAPEC-273: HTTP Response Smuggling

CAPEC-33: HTTP Request Smuggling