CVE-2026-102581
Medium
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.
SeverityMedium
CVSS4.6
Exploit probability—
Product
Moodle
PublishedSep 30, 2026
First seenSep 30, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- moodle moodle4.5.13, 5.0.9, 5.1.6, 5.2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| moodle moodle | v < 4.5.13, 5.0.0 ≤ v < 5.0.9, 5.1.0 ≤ v < 5.1.6, 5.2.0 ≤ v < 5.2.2 | 4.5.13, 5.0.9, 5.1.6, 5.2.2 |
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