Auth bypass in Moodle
CVE-2021-43560
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. Insufficient capability checks made it possible to fetch other users' calendar action events.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (61.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000
Affected products
- Moodle
- Fedoraproject Extra Packages For Enterprise Linux — versions 7.0
- Fedoraproject Fedora — versions 35
- Moodle — versions moodle 3.11.4, moodle 3.10.8 and moodle 3.9.11
Weakness classification (CWE)
Public proof-of-concept exploits
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-2021-43560?
- CVE-2021-43560 is a medium-severity vulnerability in Moodle, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2021-11-22.
- How severe is CVE-2021-43560?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-43560 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.