Vulnerability-Lookup

OESA-2026-4058 (CVE-2026-77643)

Vulnerability from osv_openeuler – Published: 2026-09-25 01:27 – Updated: 2026-09-25 01:27 – Source website

Summary

xapian-core security update

Details

Xapian is an Open Source Search Engine Library, released under the GPL v2+. It is a highly adaptable toolkit which allows developers to easily add advanced indexing and search facilities to their own applications. It has built-in support for several families of weighting models and also supports a rich set of boolean query operators.

Security Fix(es):

A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.(CVE-2026-77643)

Severity

4.4 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-77643	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "xapian-core-1.4.23-2.oe2403sp1.aarch64.rpm",
          "xapian-core-debuginfo-1.4.23-2.oe2403sp1.aarch64.rpm",
          "xapian-core-debugsource-1.4.23-2.oe2403sp1.aarch64.rpm",
          "xapian-core-devel-1.4.23-2.oe2403sp1.aarch64.rpm",
          "xapian-core-help-1.4.23-2.oe2403sp1.aarch64.rpm"
        ],
        "src": [
          "xapian-core-1.4.23-2.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "xapian-core-1.4.23-2.oe2403sp1.x86_64.rpm",
          "xapian-core-debuginfo-1.4.23-2.oe2403sp1.x86_64.rpm",
          "xapian-core-debugsource-1.4.23-2.oe2403sp1.x86_64.rpm",
          "xapian-core-devel-1.4.23-2.oe2403sp1.x86_64.rpm",
          "xapian-core-help-1.4.23-2.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "xapian-core",
        "purl": "pkg:rpm/openEuler/xapian-core\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.23-2.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "xapian-core-1.4.23-2.oe2403sp3.aarch64.rpm",
          "xapian-core-debuginfo-1.4.23-2.oe2403sp3.aarch64.rpm",
          "xapian-core-debugsource-1.4.23-2.oe2403sp3.aarch64.rpm",
          "xapian-core-devel-1.4.23-2.oe2403sp3.aarch64.rpm",
          "xapian-core-help-1.4.23-2.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "xapian-core-1.4.23-2.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "xapian-core-1.4.23-2.oe2403sp3.x86_64.rpm",
          "xapian-core-debuginfo-1.4.23-2.oe2403sp3.x86_64.rpm",
          "xapian-core-debugsource-1.4.23-2.oe2403sp3.x86_64.rpm",
          "xapian-core-devel-1.4.23-2.oe2403sp3.x86_64.rpm",
          "xapian-core-help-1.4.23-2.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "xapian-core",
        "purl": "pkg:rpm/openEuler/xapian-core\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.23-2.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "xapian-core-1.4.32-1.oe2403sp4.aarch64.rpm",
          "xapian-core-debuginfo-1.4.32-1.oe2403sp4.aarch64.rpm",
          "xapian-core-debugsource-1.4.32-1.oe2403sp4.aarch64.rpm",
          "xapian-core-devel-1.4.32-1.oe2403sp4.aarch64.rpm"
        ],
        "noarch": [
          "xapian-core-help-1.4.32-1.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "xapian-core-1.4.32-1.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "xapian-core-1.4.32-1.oe2403sp4.x86_64.rpm",
          "xapian-core-debuginfo-1.4.32-1.oe2403sp4.x86_64.rpm",
          "xapian-core-debugsource-1.4.32-1.oe2403sp4.x86_64.rpm",
          "xapian-core-devel-1.4.32-1.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "xapian-core",
        "purl": "pkg:rpm/openEuler/xapian-core\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.32-1.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "xapian-core-1.4.9-3.oe2003sp4.aarch64.rpm",
          "xapian-core-debuginfo-1.4.9-3.oe2003sp4.aarch64.rpm",
          "xapian-core-debugsource-1.4.9-3.oe2003sp4.aarch64.rpm",
          "xapian-core-devel-1.4.9-3.oe2003sp4.aarch64.rpm",
          "xapian-core-help-1.4.9-3.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "xapian-core-1.4.9-3.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "xapian-core-1.4.9-3.oe2003sp4.x86_64.rpm",
          "xapian-core-debuginfo-1.4.9-3.oe2003sp4.x86_64.rpm",
          "xapian-core-debugsource-1.4.9-3.oe2003sp4.x86_64.rpm",
          "xapian-core-devel-1.4.9-3.oe2003sp4.x86_64.rpm",
          "xapian-core-help-1.4.9-3.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "xapian-core",
        "purl": "pkg:rpm/openEuler/xapian-core\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.9-3.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "xapian-core-1.4.9-4.oe2203sp4.aarch64.rpm",
          "xapian-core-debuginfo-1.4.9-4.oe2203sp4.aarch64.rpm",
          "xapian-core-debugsource-1.4.9-4.oe2203sp4.aarch64.rpm",
          "xapian-core-devel-1.4.9-4.oe2203sp4.aarch64.rpm",
          "xapian-core-help-1.4.9-4.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "xapian-core-1.4.9-4.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "xapian-core-1.4.9-4.oe2203sp4.x86_64.rpm",
          "xapian-core-debuginfo-1.4.9-4.oe2203sp4.x86_64.rpm",
          "xapian-core-debugsource-1.4.9-4.oe2203sp4.x86_64.rpm",
          "xapian-core-devel-1.4.9-4.oe2203sp4.x86_64.rpm",
          "xapian-core-help-1.4.9-4.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "xapian-core",
        "purl": "pkg:rpm/openEuler/xapian-core\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.9-4.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Xapian is an Open Source Search Engine Library, released under the GPL v2+. It is a highly adaptable toolkit which allows developers to easily add advanced indexing and search facilities to their own applications. It has built-in support for several families of weighting models and also supports a rich set of boolean query operators.\r\n\r\nSecurity Fix(es):\n\nA cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.(CVE-2026-77643)",
  "id": "OESA-2026-4058",
  "modified": "2026-09-25T01:27:48Z",
  "published": "2026-09-25T01:27:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4058"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77643"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "xapian-core security update",
  "upstream": [
    "CVE-2026-77643"
  ]
}

CVE-2026-77643 (GCVE-0-2026-77643)

Vulnerability from cvelistv5 – Published: 2026-08-20 21:23 – Updated: 2026-08-28 18:08

Summary

Severity

4.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-28 18:08 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Assigner

mitre mitre root Scorecard

References

3 references

URL	Tags
https://bugs.debian.org/1144490
https://lists.xapian.org/pipermail/xapian-devel/2…
https://trac.xapian.org/wiki/SecurityFixes/2018-0…

Impacted products

1 product

Vendor	Product	Version
Xapian	xapian-core	Affected: 2.0.0 , < 2.1.0 (semver) Affected: 0 , < 1.4.32 (semver) cpe:2.3:a:xapian:xapian-core:::::::: cpe:2.3:a:xapian:xapian-core::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-77643",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-28T18:08:22.966488Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-28T18:08:32.929Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "xapian-core",
          "vendor": "Xapian",
          "versions": [
            {
              "lessThan": "2.1.0",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.4.32",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:xapian:xapian-core:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.1.0",
                  "versionStartIncluding": "2.0.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:xapian:xapian-core:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.4.32",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "A cross-site scripting vulnerability in \nqueryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of\u00a0CVE-2018-0499."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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          ]
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-20T21:23:31.317Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://bugs.debian.org/1144490"
        },
        {
          "url": "https://lists.xapian.org/pipermail/xapian-devel/2026-August/003429.html"
        },
        {
          "url": "https://trac.xapian.org/wiki/SecurityFixes/2018-07-02#a2026-08-13update"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-77643",
    "datePublished": "2026-08-20T21:23:31.317Z",
    "dateReserved": "2026-08-20T21:23:30.985Z",
    "dateUpdated": "2026-08-28T18:08:32.929Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

OESA-2026-4058 (CVE-2026-77643)

CVE-2026-77643 (GCVE-0-2026-77643)

Tags

Sightings

Nomenclature

Related by attack behaviour