CVE-2026-102581

Moodle: xss in forum post templates due to insufficient escaping

State: Published
Severity: 4.6 Medium
Published: Sep 30, 2026
Updated: Sep 30, 2026
Reserved: Sep 29, 2026

Description

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 arbitrary script code in the browser of another user viewing the affected post.

Scores

CVSS	Score	Vector	Source
3.1	4.6 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N	fedora

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
moodle	5.2.0 to before 5.2.2Affected 5.1.0 to before 5.1.6Affected 5.0.0 to before 5.0.9Affected before 4.5.13Affected

References

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