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Fencer Intel
high 8.8

CVE-2020-14321 in the critical feed json

Moodle Incorrect Authorization vulnerability

published 4y ago modified 2mo ago also BIT-moodle-2020-14321 , EUVD-2020-6471 , GHSA-9q29-jcjw-fw7h

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
16.0%
EPSS 16.0% chance of exploitation in 30 days, percentile 96%
public exploits
1
Metasploit

Summary

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.

Patch / fix

  • packagist moodle/moodle 3.5.13, 3.7.7, 3.8.4, 3.9.1
  • bitnami moodle 3.5.13, 3.7.7, 3.8.4, 3.9.1
  • moodle moodle 3.5.13, 3.7.7, 3.8.4

Is CVE-2020-14321 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. First public exploit (Metasploit exploit/multi/http/moodle_teacher_enrollment_priv_esc_to_rce)
  2. Published

Exploit prediction

15.99% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=3.9.0-beta, <3.9.1
>=3.8.0-beta, <3.8.4
>=3.6.0-beta, <3.7.7
<3.5.13
3.9.1
3.8.4
3.7.7
3.5.13
bitnami moodle
>=3.5.0, <3.5.13
>=3.7.0, <3.7.7
>=3.8.0, <3.8.4
>=3.9.0, <3.9.1
3.5.13
3.7.7
3.8.4
3.9.1

Affected products

  • n/a Moodle

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.