CVE-2026-102581

Published: Sep 30, 2026Modified: Oct 1, 2026

5.4

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.3 / Impact: 2.7

Source: NVD

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.

Affected (4)

Products: Moodle: Moodle

1 product

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Moodle Moodle	version < 4.5.13
Moodle Moodle	5.0.0 ≤ version < 5.0.9
Moodle Moodle	5.1.0 ≤ version < 5.1.6
Moodle Moodle	5.2.0 ≤ version < 5.2.2

Related CWEs

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

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (4)

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88981

Source: patrick@puiterwijk.org

Patch

https://access.redhat.com/security/cve/CVE-2026-102581

Source: patrick@puiterwijk.org

Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2543634

Source: patrick@puiterwijk.org

Issue TrackingThird Party Advisory

https://moodle.org/mod/forum/discuss.php?d=482499

Source: patrick@puiterwijk.org

Vendor Advisory

Timeline

No history available yet.