CVE-2021-36392

Moodle SQL Injection vulnerability

9.8 CriticalFix available

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.84%Up 0.8 points since Mar 7, 2023

What each source reports

NVD Score used 9.8

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: CVE-2021-36392
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-89
Updated: 2026-11-02

CVE List No score

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: CVE-2021-36392
Weakness: CWE-89
Updated: 2026-11-02

EUVDEUVD-2023-1078 0.0

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: EUVD-2023-1078
CVSS: 0.0 NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-qc86-vgf2-6fq6 9.8

Moodle SQL Injection vulnerability

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: GHSA-qc86-vgf2-6fq6
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-89
Updated: 2026-11-02

OSV 9.8

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: CVE-2021-36392
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-qc86-vgf2-6fq6 9.8

Moodle SQL Injection vulnerability

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: GHSA-qc86-vgf2-6fq6
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-89
Updated: 2026-11-02

OSVUBUNTU-CVE-2021-36392 9.8

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: UBUNTU-CVE-2021-36392
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVBIT-moodle-2021-36392 No score

In Moodle, an SQL injection risk was identified in the library fetching a user's enrolled courses.

Record: BIT-moodle-2021-36392
Updated: 2026-11-02

Affected products

moodle

Affected packages

Affected packages
Package	Affected	Fixed
`moodle/moodle` Packagist	3.11.0-beta up to 3.11.1	3.11.1
`moodle/moodle` Packagist	3.10.0-beta up to 3.10.5	3.10.5
`moodle/moodle` Packagist	before 3.9.8	3.9.8
`moodle` Bitnami	before 3.9.8, 3.10.0 up to 3.10.5, 3.11.0 up to 3.11.1	3.9.83.10.53.11.1
`moodle/moodle` Packagist	3.11.0-beta up to 3.11.1, plus listed versions v3.11.0v3.11.0-betav3.11.0-rc1v3.11.0-rc2	3.11.1
`moodle/moodle` Packagist	3.10.0-beta up to 3.10.5, plus listed versions v3.10.0v3.10.0-betav3.10.0-rc1v3.10.0-rc2v3.10.1v3.10.2v3.10.3v3.10.4	3.10.5
`moodle/moodle` Packagist	before 3.9.8, plus listed versions v2.3.10v2.3.11v2.3.4v2.3.5v2.3.6 Show 45 moreShow less v2.3.7v2.3.8v2.3.9v2.4.0v2.4.0-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	3.9.8
`moodle` Ubuntu: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
`moodle` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 3.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-36392 is a critical vulnerability (CVSS 9.8) in Moodle, published March 6, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.84%, the 58th percentile. Fixed in moodle/moodle 3.11.1.

References

This page doesn't list everything

Left out here: 205 versions. The JSON record has them.