CVE-2020-14321
Moodle Incorrect Authorization vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-14321- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-14321- Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2020-6471 No score
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.
- Record
EUVD-2020-6471- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9q29-jcjw-fw7h
Moodle Incorrect Authorization vulnerability
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.
- Record
GHSA-9q29-jcjw-fw7h- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2020-14321- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-9q29-jcjw-fw7h
Moodle Incorrect Authorization vulnerability
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.
- Record
GHSA-9q29-jcjw-fw7h- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVUBUNTU-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.
- Record
UBUNTU-CVE-2020-14321- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVBIT-moodle-2020-14321 No score
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.
- Record
BIT-moodle-2020-14321- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
3.9.0-beta up to 3.9.1 | 3.9.1 |
moodle/moodlePackagist |
3.8.0-beta up to 3.8.4 | 3.8.4 |
moodle/moodlePackagist |
3.6.0-beta up to 3.7.7 | 3.7.7 |
moodle/moodlePackagist |
before 3.5.13 | 3.5.13 |
moodleBitnami |
3.5.0 up to 3.5.13, 3.7.0 up to 3.7.7, 3.8.0 up to 3.8.4, 3.9.0 up to 3.9.1 | 3.5.133.7.73.8.43.9.1 |
moodle/moodlePackagist |
3.9.0-beta up to 3.9.1, plus listed versions v3.9.0v3.9.0-betav3.9.0-rc1v3.9.0-rc2v3.9.0-rc3 |
3.9.1 |
moodle/moodlePackagist |
3.8.0-beta up to 3.8.4, plus listed versions v3.8.0v3.8.0-betav3.8.0-rc1v3.8.1v3.8.2v3.8.3 |
3.8.4 |
moodle/moodlePackagist |
3.6.0-beta up to 3.7.7, plus listed versions v3.6.0v3.6.0-betav3.6.0-rc1v3.6.0-rc2v3.6.0-rc3 Show 20 moreShow lessv3.6.1v3.6.10v3.6.2v3.6.3v3.6.4v3.6.5v3.6.6v3.6.7v3.6.8v3.6.9v3.7.0v3.7.0-betav3.7.0-rc1v3.7.0-rc2v3.7.1v3.7.2v3.7.3v3.7.4v3.7.5v3.7.6 |
3.7.7 |
moodle/moodlePackagist |
before 3.5.13, plus listed versions v2.3.10v2.3.11v2.3.4v2.3.5v2.3.6 Show 45 moreShow lessv2.3.7v2.3.8v2.3.9v2.4.0v2.4.0-rc1v2.4.1v2.4.10v2.4.11v2.4.2v2.4.3v2.4.4v2.4.5v2.4.6v2.4.7v2.4.8v2.4.9v2.5.0v2.5.0-betav2.5.0-rc1v2.5.1v2.5.2v2.5.3v2.5.4v2.5.5v2.5.6v2.5.7v2.5.8v2.5.9v2.6.0v2.6.0-betav2.6.0-rc1v2.6.1v2.6.10v2.6.11v2.6.2v2.6.3v2.6.4v2.6.5v2.6.6v2.6.7v2.6.8v2.6.9v2.7.0v2.7.0-betav2.7.0-rc1 |
3.5.13 |
moodleUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 2.7.9+dfsg-12.7.10+dfsg-12.7.11+dfsg-12.7.11+dfsg-22.7.12+dfsg-13.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
moodleUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 3.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | Moodle Teacher Enrollment Privilege Escalation to RCE | 2020-07-20 |
| PoC in GitHub | HoangKien1020/CVE-2020-14321 | 2020-07-26 |
| PoC in GitHub | f0ns1/CVE-2020-14321-modified-exploit | 2022-02-01 |
| PoC in GitHub | lanzt/CVE-2020-14321 | 2021-04-28 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, Metasploit, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-14321 is a high vulnerability (CVSS 8.8) in Moodle, published August 16, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 16.0%, the 96th percentile. Fixed in moodle/moodle 3.9.1.
References
Left out here: 147 versions. The JSON record has them.