{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.27.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1dac1bb2f8593d4319125fa6bca9283000a2ddc2"
            }
          ],
          "repo": "https://github.com/go-gitea/gitea",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-579w-82gf-89m2"
  ],
  "database_specific": {
    "cna_assigner": "Gitea",
    "cwe_ids": [
      "CWE-88"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73539.json"
  },
  "details": "Gitea substitutes a URL derived from the markup Context field into external renderer command templates without escaping the reference path before shell-style argument splitting. A crafted Context can inject additional renderer arguments, including options that load executable filter files. On deployments using a susceptible external renderer such as pandoc, a user who can place a filter file at an accessible path can cause it to execute as the Gitea service account; the public repository markup endpoint itself can be reachable without authentication.",
  "id": "CVE-2026-73539",
  "modified": "2026-10-16T02:30:56.091463534Z",
  "published": "2026-10-14T14:37:44.243Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://blog.gitea.com/release-of-1.27.2/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73539.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/go-gitea/gitea/releases/tag/v1.27.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-579w-82gf-89m2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73539"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/38885"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/38898"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Gitea external renderer argument injection and code execution"
}