What’s Vulnerable › Vulnerabilities

CVE-2024-33998: moodle: stored XSS via user's name on participants page when opening some options

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-31 · updated 2026-06-17
• Weakness: CWE-79

Description

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

Affected products

• Moodle: before 4.1.10; from 4.2.0 before 4.2.7; from 4.3.0 before 4.3.4 — fixed in 4.1.10, 4.2.7, 4.3.4

How to fix

Upgrade to a fixed version: Moodle 4.1.10, 4.2.7, 4.3.4. Check the vendor advisory for mitigations.

References

• https://moodle.org/mod/forum/discuss.php?d=458386
• https://moodle.org/mod/forum/discuss.php?d=458386

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