TI-2025-41489 Aliases CVE-2025-67850 GHSA-6mmv-f6c6-v6q8

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

LOW 34CWE-79Published 2026-02-03 · Updated 2026-02-26

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00303 23rd percentileScored 2026-11-07

Fix Fixed moodle: 4.1.22, 4.4.12, 4.5.8 +2moodle/moodle (Packagist): 4.1.22, 4.4.12, 4.5.8 +2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	moodle	4.1.0 to before 4.1.22; 4.4.0 to before 4.4.12; 4.5.0 to before 4.5.8; 5.0.0 to before 5.0.4; 5.1.0 to before 5.1.1	4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1	Patch available	CNA
—	moodle/moodle (Packagist)	before 4.1.22	4.1.22	Patch available	GHSA-6mmv-f6c6-v6q8
—	moodle/moodle (Packagist)	4.4.0-beta to before 4.4.12	4.4.12	Patch available	GHSA-6mmv-f6c6-v6q8
—	moodle/moodle (Packagist)	4.5.0-beta to before 4.5.8	4.5.8	Patch available	GHSA-6mmv-f6c6-v6q8
—	moodle/moodle (Packagist)	5.0.0-beta to before 5.0.4	5.0.4	Patch available	GHSA-6mmv-f6c6-v6q8
—	moodle/moodle (Packagist)	5.1.0-beta to before 5.1.1	5.1.1	Patch available	GHSA-6mmv-f6c6-v6q8

moodle Vendor— Affected 4.1.0 to before 4.1.22; 4.4.0 to before 4.4.12; 4.5.0 to before 4.5.8; 5.0.0 to before 5.0.4; 5.1.0 to before 5.1.1 Fixed in 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1 Patch available CNA
moodle/moodle (Packagist) Vendor— Affected before 4.1.22 Fixed in 4.1.22 Patch available GHSA-6mmv-f6c6-v6q8
moodle/moodle (Packagist) Vendor— Affected 4.4.0-beta to before 4.4.12 Fixed in 4.4.12 Patch available GHSA-6mmv-f6c6-v6q8
moodle/moodle (Packagist) Vendor— Affected 4.5.0-beta to before 4.5.8 Fixed in 4.5.8 Patch available GHSA-6mmv-f6c6-v6q8
moodle/moodle (Packagist) Vendor— Affected 5.0.0-beta to before 5.0.4 Fixed in 5.0.4 Patch available GHSA-6mmv-f6c6-v6q8
moodle/moodle (Packagist) Vendor— Affected 5.1.0-beta to before 5.1.1 Fixed in 5.1.1 Patch available GHSA-6mmv-f6c6-v6q8

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:moodle:moodle::::::::	before 4.1.22; 4.4.0 to before 4.4.11; 4.5.0 to before 4.5.8; 5.0.0 to before 5.0.4	Vulnerable	Moodle
cpe:2.3:a:moodle:moodle:5.1.0:-::::::	5.1.0	Vulnerable	Moodle

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* Versions before 4.1.22; 4.4.0 to before 4.4.11; 4.5.0 to before 4.5.8; 5.0.0 to before 5.0.4 Vulnerable ·Moodle
cpe:2.3:a:moodle:moodle:5.1.0:-:*:*:*:*:*:* Versions 5.1.0 Vulnerable ·Moodle

Remediation

Fix · CNA moodle Fixed in 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1
Fix · GHSA-6mmv-f6c6-v6q8 moodle/moodle (Packagist) Fixed in 4.1.22 Advisory →
Fix · GHSA-6mmv-f6c6-v6q8 moodle/moodle (Packagist) Fixed in 4.4.12 Advisory →
Fix · GHSA-6mmv-f6c6-v6q8 moodle/moodle (Packagist) Fixed in 4.5.8 Advisory →
Fix · GHSA-6mmv-f6c6-v6q8 moodle/moodle (Packagist) Fixed in 5.0.4 Advisory →
Fix · GHSA-6mmv-f6c6-v6q8 moodle/moodle (Packagist) Fixed in 5.1.1 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2025-67850
2026-10-03 Alias added: GHSA-6mmv-f6c6-v6q8

References

Advisory 3

Other 3

TI-2024-22468 moodle: unsafe direct use of $_SERVER['HTTP_REFERER'] in admin/tool/mfa/index.php CVSS 3.1CRITICAL 9.8
TI-2021-14741 In Moodle, an SQL injection risk was identified in the library fetching a user's recent courses. CVSS 3.1CRITICAL 9.8
TI-2024-29071 Moodle: remote code execution via calculated question types CVSS 3.1HIGH 8.1
TI-2016-06653 Moodle 3.1.2 allows remote attackers to obtain sensitive information via unspecified… CVSS 3.1HIGH 7.5
TI-2022-00259 SQL injection in moodle CVSS 3.1CRITICAL 9.8
TI-2022-16116 Path traversal in Moodle CVSS 3.1HIGH 7.5

See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences