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Description

A flaw was found in moodle. This vulnerability, known as Cross-Site Scripting (XSS), occurs due to insufficient checks on user-provided data in the formula editor's arithmetic expression fields. A remote attacker could inject malicious code into these fields. When other users view these expressions, the malicious code would execute in their web browsers, potentially compromising their data or leading to unauthorized actions.

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

4.1.0 (semver) before 4.1.22
affected

4.4.0 (semver) before 4.4.12
affected

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 Aleksey Solovev for reporting this issue.

References

access.redhat.com/security/cve/CVE-2025-67850 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2423838 (RHBZ#2423838) issue-tracking

cve.org (CVE-2025-67850)

nvd.nist.gov (CVE-2025-67850)

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