CVE-2026-89430 (GCVE-0-2026-89430)

Vulnerability from cvelistv5 – Published: 2026-10-06 19:23 – Updated: 2026-10-06 19:23
VLAI
Title
Gitea push mirror SSRF and forced writes to internal Git hosts
Summary
Gitea validated a push mirror's remote address against the `[migrations]` allow and block lists only when the mirror was created. Each synchronization passed the stored address directly to `git push`, so a name that later resolved to a blocked or internal address was still reached. A user with administrator access to a repository, which includes repositories they create themselves, could aim push mirror synchronization at internal Git services and force-push the repository's contents to them.
Severity
No CVSS data available.
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
Gitea Gitea Affected: 0 , ≤ 1.27.3 (semver)
Create a notification for this product.
Credits
https://github.com/thesmartshadow https://github.com/manus-use https://github.com/cy3erm https://github.com/TheFox0x7 https://github.com/silverwind https://github.com/bircni https://github.com/wxiaoguang
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "gitea.dev",
          "product": "Gitea",
          "vendor": "Gitea",
          "versions": [
            {
              "lessThanOrEqual": "1.27.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "https://github.com/thesmartshadow"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "https://github.com/manus-use"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "https://github.com/cy3erm"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/TheFox0x7"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/silverwind"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/bircni"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/wxiaoguang"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Gitea validated a push mirror\u0027s remote address against the `[migrations]` allow and block lists only when the mirror was created. Each synchronization passed the stored address directly to `git push`, so a name that later resolved to a blocked or internal address was still reached. A user with administrator access to a repository, which includes repositories they create themselves, could aim push mirror synchronization at internal Git services and force-push the repository\u0027s contents to them."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-367",
              "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T19:23:52.198Z",
        "orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "shortName": "Gitea"
      },
      "references": [
        {
          "name": "GitHub Security Advisory GHSA-hcgw-r9gf-8mph",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-hcgw-r9gf-8mph"
        },
        {
          "name": "Fix: go-gitea/gitea pull request #39010",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/39010"
        },
        {
          "name": "Fix: go-gitea/gitea pull request #39426",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/39426"
        },
        {
          "name": "Gitea 28.0.0 release announcement",
          "tags": [
            "release-notes"
          ],
          "url": "https://blog.gitea.com/release-of-28.0.0/"
        },
        {
          "name": "go-gitea/gitea v28.0.0 release",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/go-gitea/gitea/releases/tag/v28.0.0"
        }
      ],
      "title": "Gitea push mirror SSRF and forced writes to internal Git hosts"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
    "assignerShortName": "Gitea",
    "cveId": "CVE-2026-89430",
    "datePublished": "2026-10-06T19:23:52.198Z",
    "dateReserved": "2026-10-04T21:57:35.573Z",
    "dateUpdated": "2026-10-06T19:23:52.198Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-10-07",
      "epss": "0.00118",
      "percentile": "0.0157"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "packageName": "gitea.dev",
                "product": "Gitea",
                "vendor": "Gitea",
                "versions": [
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
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          }
        ],
        "id": "CVE-2026-89430",
        "lastModified": "2026-10-07T13:45:36.947",
        "metrics": {},
        "published": "2026-10-06T20:17:34.297",
        "references": [
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            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
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            "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-hcgw-r9gf-8mph"
          }
        ],
        "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
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                "value": "CWE-367"
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            ],
            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "type": "Secondary"
          }
        ]
      }
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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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.
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  • 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.



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