What is CVE-2025-67849?

CVE-2025-67849 is a high-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-02-03.

How severe is CVE-2025-67849?

High severity. CVSS v3 base score is 7.3 out of 10.

XSS in Moodle

CVE-2025-67849

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (14.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.

Affected products

Moodle — versions 5.1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

patrick@puiterwijk.org (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
patrick@puiterwijk.org (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2025-67849?: CVE-2025-67849 is a high-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-02-03.
How severe is CVE-2025-67849?: High severity. CVSS v3 base score is 7.3 out of 10.