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Public proof of conceptFix available

CVE-2020-14321

A public proof of concept exists; no exploitation attested.

  • Published2022-08-16
  • Fixed in3.9.1 · 3.8.4 · 3.7.7 · 3.5.13
  • WeaknessCWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2022-08-1621:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-14321?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-14321?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD
Moodle
BranchAffectedFixed in
3.9≥ 3.9.0, < 3.9.13.9.1
3.9≥ 3.9.0-beta, < 3.9.13.9.1
3.8≥ 3.8.0, < 3.8.43.8.4
3.8≥ 3.8.0-beta, < 3.8.43.8.4
3.7≥ 3.7.0, < 3.7.73.7.7
3.x≥ 3.6.0-beta, < 3.7.73.7.7
3.5≥ 3.5.0, < 3.5.133.5.13
3.5< 3.5.133.5.13
3.9= 3.9.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • moodleUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • moodleUbuntu:Pro:16.04:LTSall versions · no fixed version listed

Full record on NVD

Fix

  1. Update Moodle to 3.9.1 · 3.8.4 · 3.7.7 · 3.5.13

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
3 repositories, unverifiedHoangKien1020/CVE-2020-14321lanzt/CVE-2020-14321f0ns1/CVE-2020-14321-modified-exploit
PoC-in-GitHub
Metasploit modules
1 moduleexploit/multi/http/moodle_teacher_enrollment_priv_esc_to_rcerank: goodModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2022-08-16
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-9q29-jcjw-fw7h

Frequently asked questions

What is 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.

Is CVE-2020-14321 actively exploited?

Active exploitation of CVE-2020-14321 has not been confirmed. Its EPSS score was 16.0% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-14321?

CVE-2020-14321 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record