{"id":"CVE-2026-63002","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-63002","generatedAt":"2026-10-28T01:41:52.089Z","title":"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…","description":"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.","published":"2026-09-23T15:17:16.000Z","lastModified":"2026-10-19T20:36:13.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["redaxo/redaxo"],"epss":{"score":0.00197,"percentile":0.09345,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.00183,"percentile":0.06972}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-23T15:17:16.000Z","detail":{"score":"4.8","severity":"MEDIUM","publishedAt":"2026-09-23T15:17:15.770Z"},"summary":"New CVE, medium severity (CVSS 4.8)."}],"references":[{"url":"https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/redaxo/core/pull/6581","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/redaxo/core/releases/tag/5.21.2","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m","tags":["Exploit","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m","tags":["Exploit","Vendor Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63002","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}