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Fencer Vulns
medium 5.4

CVE-2024-33998 json

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

published 2024-05-31 2 y ago modified 2026-09-08 2 mo ago also BIT-moodle-2024-33998 , EUVD-2024-1870 , GHSA-xqhh-253w-4q5f

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

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

Patch / fix

  • packagist moodle/moodle 4.1.10, 4.2.7, 4.3.4
  • bitnami moodle 4.1.10, 4.2.7, 4.3.4
  • moodle moodle 4.1.10, 4.2.7, 4.3.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-33998 updated

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

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
OSV 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=4.3.0, <4.3.4
>=4.2.0, <4.2.7
<4.1.10
4.3.4
4.2.7
4.1.10
bitnami moodle
<4.1.10
>=4.2.0, <4.2.7
>=4.3.0, <4.3.4
4.1.10
4.2.7
4.3.4

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.