{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.11.1"
              },
              {
                "fixed": "2026.8"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "c17dbfb45f4ce50ee0e07b9519512c5a9a9313c6"
            },
            {
              "fixed": "b924fd613e7e3bb93e2f0ff5640ee82b5d3620a5"
            }
          ],
          "repo": "https://github.com/weblateorg/weblate",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-327h-qqgm-qv55"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-78",
      "CWE-88"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86035.json"
  },
  "details": "Weblate is a web-based continuous localization platform used to manage software translations. Weblate 4.11.1 through 2026.7.1 contains an argument-injection vulnerability in its Mercurial backend. Repository filenames beginning with - could be interpreted as Mercurial options instead of literal paths. An authenticated user with project-scoped component.edit permission could exploit this through a Mercurial-backed RESX component using the Update RESX files add-on. A later repository update could execute arbitrary commands with the privileges of the Weblate service account. This is a residual incomplete fix for CVE-2022-23915. This issue has been patched in version 2026.8.",
  "id": "CVE-2026-86035",
  "modified": "2026-10-01T03:31:01.585447066Z",
  "published": "2026-09-29T14:58:20.313Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86035.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/WeblateOrg/weblate/security/advisories/GHSA-327h-qqgm-qv55"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86035"
    },
    {
      "type": "FIX",
      "url": "https://github.com/WeblateOrg/weblate/commit/f60a9759a6d851bd10ccdefe9b1b7f0cdb9e9bbd"
    },
    {
      "type": "FIX",
      "url": "https://github.com/WeblateOrg/weblate/pull/20768"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Weblate: Mercurial argument injection via repository filenames allows authenticated command execution"
}