What is CVE-2022-0333?

CVE-2022-0333 is a low-severity vulnerability in Moodle, classified under Incorrect Authorization. CVSS score: 3.8/10. Published 2022-01-25.

How severe is CVE-2022-0333?

Low severity. CVSS v3 base score is 3.8 out of 10.

Is CVE-2022-0333 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-2022-0333

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. The calendar:manageentries capability allowed managers to access or modify any calendar event, but should have been restricted from accessing user level events.

Vulnerability class: Broken Access Control

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

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

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

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

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-2022-0333?: CVE-2022-0333 is a low-severity vulnerability in Moodle, classified under Incorrect Authorization. CVSS score: 3.8/10. Published 2022-01-25.
How severe is CVE-2022-0333?: Low severity. CVSS v3 base score is 3.8 out of 10.
Is CVE-2022-0333 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.