What is CVE-2022-0334?

CVE-2022-0334 is a medium-severity vulnerability in Moodle, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2022-01-25.

How severe is CVE-2022-0334?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2022-0334 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Moodle

CVE-2022-0334

A flaw was found in Moodle in versions 3.11 to 3.11.4, 3.10 to 3.10.8, 3.9 to 3.9.11 and earlier unsupported versions. Insufficient capability checks could lead to users accessing their grade report for courses where they did not have the required gradereport/user:view capability.

Vulnerability class: Broken Access Control

Published 2022-01-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Moodle
Moodle — versions moodle 3.11.5, moodle 3.10.9 and moodle 3.9.12

Weakness classification (CWE)

Public proof-of-concept exploits

jev770/badmoodle-scan

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
moodle.org/mod/forum/discuss.php (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2022-0334?: CVE-2022-0334 is a medium-severity vulnerability in Moodle, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2022-01-25.
How severe is CVE-2022-0334?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2022-0334 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.