{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.27.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "15b8a5805adf57c5189602008d38cccfd3c795e0"
            }
          ],
          "repo": "https://github.com/go-gitea/gitea",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hcgw-r9gf-8mph"
  ],
  "database_specific": {
    "cna_assigner": "Gitea",
    "cwe_ids": [
      "CWE-367",
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89430.json"
  },
  "details": "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.",
  "id": "CVE-2026-89430",
  "modified": "2026-10-08T02:30:44.230603706Z",
  "published": "2026-10-06T19:23:52.198Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://blog.gitea.com/release-of-28.0.0/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89430.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/go-gitea/gitea/releases/tag/v28.0.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-hcgw-r9gf-8mph"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89430"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/39010"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/39426"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Gitea push mirror SSRF and forced writes to internal Git hosts"
}