CVE-2025-67850

Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor

Published Feb 3, 2026 CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-6mmv-f6c6-v6q8 Moodle vulnerable to Cross-site Scripting
History
Type Values Removed Values Added
CPEs cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:5.1.0:-:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Moodle
Moodle moodle
Vendors & Products Moodle
Moodle moodle
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Feb 26, 2026, 3:04 PM
Reserved
Dec 12, 2025, 1:00 PM
Status
Analyzed
Published
Feb 3, 2026, 11:15 AM
Modified
Jun 17, 2026, 9:58 AM