CVE-2025-67856 Moodle: moodle: privilege escalation via incomplete role checks in badge awarding

What is CVE-2025-67856?

CVE-2025-67856 is a medium-severity missing authorization vulnerability in Moodle Moodle, published on 3 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A flaw was found in Moodle. An authorization logic flaw, specifically due to incomplete role checks during the badge awarding process, allowed badges to be granted without proper verification. This could enable unauthorized users to obtain badges they are not entitled to, potentially leading to privilege escalation or unauthorized access to certain features.

Weakness: CWE-863

Which versions are affected by CVE-2025-67856?

11 open source packages ship an affected version, including moodle/moodle and moodle. It affects 1 product.

Products include Moodle Moodle.

How do I fix CVE-2025-67856?

Upgrade moodle/moodle to a fixed version for your release line: 4.1.22, 4.4.12, 4.5.8 or 5.0.4.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-67856 being exploited?

There is no known exploitation of CVE-2025-67856 in the wild and no public exploit code.

Other vulnerabilities in Moodle Moodle

• CVE-2006-4935 File upload in n/a Critical 10.0
• CVE-2006-4936 Moodle does not properly validate module instance id Critical 10.0
• CVE-2004-2233 Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors. Critical 10.0
• CVE-2004-2235 Cross-site scripting in n/a Critical 10.0
• CVE-2004-2236 Other in n/a Critical 10.0

All Moodle Moodle vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-moodle-2025-67856, GHSA-hcm6-q6pc-xfhm, UBUNTU-CVE-2025-67856.