CVE-2025-67850
High
Description
A flaw was found in moodle. This vulnerability, known as Cross-Site Scripting (XSS), occurs due to insufficient checks on user-provided data in the formula editor's arithmetic expression fields. A remote attacker could inject malicious code into these fields. When other users view these expressions, the malicious code would execute in their web browsers, potentially compromising their data or leading to unauthorized actions.
SeverityHigh
CVSS7.3
Exploit probability—
Product
Moodle
PublishedFeb 3, 2026
First seenFeb 3, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- moodle moodle4.1.22, 4.4.11, 4.5.8, 5.0.4 or later
- moodle/moodle4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| moodle moodle | v < 4.1.22, 4.4.0 ≤ v < 4.4.11, 4.5.0 ≤ v < 4.5.8, 5.0.0 ≤ v < 5.0.4, 5.1.0 | 4.1.22, 4.4.11, 4.5.8, 5.0.4 |
| moodle/moodlePackagist | v < 4.1.22, 4.4.0-beta ≤ v < 4.4.12, 4.5.0-beta ≤ v < 4.5.8, 5.0.0-beta ≤ v < 5.0.4, 5.1.0-beta ≤ v < 5.1.1 | 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1 |
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