{"id":"CVE-2026-102581","title":"A flaw was found in Moodle","summary":"A flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes …","severity":"medium","cvss":4.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","cwe":["CWE-79"],"product":"moodle","affected":["moodle >= 5.2.0 < 5.2.2","moodle >= 5.1.0 < 5.1.6","moodle >= 5.0.0 < 5.0.9","moodle < 4.5.13"],"published":"2026-09-30","updated":"2026-09-30","sourceUpdated":"2026-09-30T09:17:15.213","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102581","references":[{"url":"http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88981","label":"patrick@puiterwijk.org"},{"url":"https://access.redhat.com/security/cve/CVE-2026-102581","label":"patrick@puiterwijk.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543634","label":"patrick@puiterwijk.org"},{"url":"https://moodle.org/mod/forum/discuss.php?d=482499","label":"patrick@puiterwijk.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-30T09:00:29.912Z","slug":"CVE-2026-102581","body":"## Overview\n\nA flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes arbitrary script code in the browser of another user viewing the affected post.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":25,"depthScoreParts":{"impact":25.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}