CVE-2024-33997

moodle: stored XSS risk when editing another user's equation in equation editor

6.1 MediumFix available

Additional sanitizing was required when opening the equation editor to prevent a stored XSS risk when editing another user's equation.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.38%Up 0.3 points since Jun 1, 2024

What each source reports

CVE List Score used 6.1

moodle: stored XSS risk when editing another user's equation in equation editor

Additional sanitizing was required when opening the equation editor to prevent a stored XSS risk when editing another user's equation.

Record: CVE-2024-33997
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79, CWE-79
Updated: 2026-11-02

EUVDEUVD-2024-1559 6.1

Additional sanitizing was required when opening the equation editor to prevent a stored XSS risk when editing another user's equation.

Record: EUVD-2024-1559
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-9qgq-93c7-9hm4 6.1

Moodle stored Cross-site Scripting (XSS)

Additional sanitizing was required when opening the equation editor to prevent a stored Cross-site Scripting (XSS) risk when editing another user's equation.

Record: GHSA-9qgq-93c7-9hm4
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.1

Additional sanitizing was required when opening the equation editor to prevent a stored XSS risk when editing another user's equation.

Record: CVE-2024-33997
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 6.1

moodle: stored XSS risk when editing another user's equation in equation editor

Additional sanitizing was required when opening the equation editor to prevent a stored XSS risk when editing another user's equation.

Record: CVE-2024-33997
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-9qgq-93c7-9hm4 6.1

Moodle stored Cross-site Scripting (XSS)

Additional sanitizing was required when opening the equation editor to prevent a stored Cross-site Scripting (XSS) risk when editing another user's equation.

Record: GHSA-9qgq-93c7-9hm4
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-33997 6.1

Additional sanitizing was required when opening the equation editor to prevent a stored XSS risk when editing another user's equation.

Record: UBUNTU-CVE-2024-33997
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVBIT-moodle-2024-33997 No score

moodle: stored XSS risk when editing another user's equation in equation editor

Additional sanitizing was required when opening the equation editor to prevent a stored XSS risk when editing another user's equation.

Record: BIT-moodle-2024-33997
Updated: 2026-11-02

Affected products

moodle

Affected packages

Affected packages
Package	Affected	Fixed
`moodle/moodle` Packagist	4.3.0 up to 4.3.4	4.3.4
`moodle/moodle` Packagist	4.2.0 up to 4.2.7	4.2.7
`moodle/moodle` Packagist	before 4.1.10	4.1.10
`moodle` Bitnami	before 4.1.10, 4.2.0 up to 4.2.7, 4.3.0 up to 4.3.4	4.1.104.2.74.3.4
`moodle/moodle` Packagist	4.3.0 up to 4.3.4, plus listed versions v4.3.0v4.3.1v4.3.2v4.3.3	4.3.4
`moodle/moodle` Packagist	4.2.0 up to 4.2.7, plus listed versions v4.2.0v4.2.1v4.2.2v4.2.3v4.2.4v4.2.5v4.2.6	4.2.7
`moodle/moodle` Packagist	before 4.1.10, 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	4.1.10
`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 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2024-33997 is a medium vulnerability (CVSS 6.1) in Moodle, published May 31, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 31st percentile. Fixed in moodle/moodle 4.3.4.

References

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This page doesn't list everything

Left out here: 292 versions. The JSON record has them.