CVE-2024-33998

moodle: stored XSS via user's name on participants page when opening some options

5.4 MediumFix available

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.37%Up 0.3 points since Jun 1, 2024

What each source reports

CVE List Score used 5.4

moodle: stored XSS via user's name on participants page when opening some options

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: CVE-2024-33998
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2024-1870 5.4

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: EUVD-2024-1870
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-xqhh-253w-4q5f 5.4

Moodle Cross-site Scripting (XSS)

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: GHSA-xqhh-253w-4q5f
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 5.4

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: CVE-2024-33998
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 5.4

moodle: stored XSS via user's name on participants page when opening some options

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: CVE-2024-33998
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-xqhh-253w-4q5f 5.4

Moodle Cross-site Scripting (XSS)

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: GHSA-xqhh-253w-4q5f
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-33998 5.4

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: UBUNTU-CVE-2024-33998
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVBIT-moodle-2024-33998 No score

moodle: stored XSS via user's name on participants page when opening some options

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Record: BIT-moodle-2024-33998
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 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-2024-33998 is a medium vulnerability (CVSS 5.4) in Moodle, published May 31, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, 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.