{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "5.7.0"
              },
              {
                "fixed": "5.7.7"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "72bb9e0235574397cf06a2165dc21fdd19186c74"
            },
            {
              "fixed": "1f8131ccf1950bba4130884e7320b649223dcfc3"
            }
          ],
          "repo": "https://github.com/contao/contao",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-grm4-wm43-9jh5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55825.json"
  },
  "details": "Contao is an Open Source CMS. In versions 5.7.0 through 5.7.6, an authenticated backend user who can access one job can request an attachment identifier containing ../ segments and make the job attachment download endpoint read a file from another job directory inside var/job-attachments. The controller authorizes only the jobUuid route parameter. The later attachment lookup joins that authorized job UUID with the attacker-controlled identifier, then passes the combined path to the virtual filesystem. VirtualFilesystem::resolve() canonicalizes the whole path and only rejects paths that escape the filesystem mount, so authorized-job/../victim-job/debug_log.csv becomes victim-job/debug_log.csv. This is a cross-job authorization bypass for known job attachment paths. It is not a practical brute-force against unknown jobs because job directories are UUID v4 values.",
  "id": "CVE-2026-55825",
  "modified": "2026-08-04T11:31:07.144900479Z",
  "published": "2026-07-31T19:07:40.609Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55825.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/contao/contao/security/advisories/GHSA-grm4-wm43-9jh5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55825"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Contao: Possible path traversal in job download URIs"
}