What is CVE-2021-36400?

CVE-2021-36400 is a medium-severity vulnerability in Moodle, classified under Incorrect Default Permissions. CVSS score: 5.3/10. Published 2023-03-06.

How severe is CVE-2021-36400?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-36400 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-2021-36400

In Moodle, insufficient capability checks made it possible to remove other users' calendar URL subscriptions.

EPSS: 0.005 (40.3th percentile) — read the EPSS interpretation.

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:N/I:L/A:N.

Affected products

Moodle
N/a Moodle — versions 3.11, 3.10 to 3.10.4, 3.9 to 3.9.7 and earlier unsupported versions

Weakness classification (CWE)

Public proof-of-concept exploits

jev770/badmoodle-scan

References

patrick@puiterwijk.org (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-36400?: CVE-2021-36400 is a medium-severity vulnerability in Moodle, classified under Incorrect Default Permissions. CVSS score: 5.3/10. Published 2023-03-06.
How severe is CVE-2021-36400?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-36400 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.