Auth bypass in Moodle

CVE-2020-14321

In Moodle before 3.9.1, 3.8.4, 3.7.7 and 3.5.13, teachers of a course were able to assign themselves the manager role within that course.

Vulnerability class: Broken Access Control

EPSS: 0.167 (96.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Moodle — versions 3.9.0
  • N/a Moodle — versions Moodle 3.9, 3.8 to 3.8.3, 3.7 to 3.7.6, 3.5 to 3.5.12 and earlier unsupported versions

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-14321?
CVE-2020-14321 is a high-severity vulnerability in Moodle, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2022-08-16.
How severe is CVE-2020-14321?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2020-14321 known to be exploited?
12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.