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Description

A flaw was found in Moodle. This cross-site scripting (XSS) vulnerability, caused by improper sanitization of AI prompt responses, allows attackers to inject malicious HTML or script into web pages. When other users view these compromised pages, their sessions could be stolen, or the user interface could be manipulated.

PUBLISHED Reserved 2025-12-12 | Published 2026-02-03 | Updated 2026-02-04 | Assigner fedora




HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

4.5.0 (semver) before 4.5.8
affected

5.0.0 (semver) before 5.0.4
affected

5.1.0 (semver) before 5.1.1
affected

Timeline

2025-12-19:Reported to Red Hat.
2025-12-15:Made public.

Credits

Red Hat would like to thank Vuln37 for reporting this issue.

References

access.redhat.com/security/cve/CVE-2025-67849 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2423835 (RHBZ#2423835) issue-tracking

cve.org (CVE-2025-67849)

nvd.nist.gov (CVE-2025-67849)

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