{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "5.21.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c"
            },
            {
              "fixed": "31d61c6a460b6c8daf09baa75d6477fa3a93a68b"
            }
          ],
          "repo": "https://github.com/redaxo/core",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w998-qmw9-mf4m"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63002.json"
  },
  "details": "REDAXO is a PHP-based content management system. Prior to 5.21.2, redaxo/src/addons/mediapool/pages/sync.php inserts filenames held in $diffFiles from the media filesystem into the Mediapool Sync page without rex_escape(). An attacker who can place an unregistered file with HTML metacharacters in the media directory can execute script in the browser of a backend user with media[sync] permission when that user opens the Sync page, enabling session theft or unauthorized backend actions. This issue is fixed in version 5.21.2.",
  "id": "CVE-2026-63002",
  "modified": "2026-09-26T03:30:29.776639700Z",
  "published": "2026-09-23T14:05:39.056Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/redaxo/core/releases/tag/5.21.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63002.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63002"
    },
    {
      "type": "FIX",
      "url": "https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/redaxo/core/pull/6581"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "REDAXO: Stored XSS in Mediapool Sync Page via Unescaped Filesystem Filenames"
}