XSS in Moodle

CVE-2025-26528

The drag-and-drop onto image (ddimageortext) question type required additional sanitizing to prevent a stored XSS risk.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (20.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.4 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N.

Affected products

Moodle
Moodle Project — versions 4.5.0, 4.4.0, 4.3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

patrick@puiterwijk.org (vendor-advisory, Vendor Advisory)
patrick@puiterwijk.org (Patch, patch)

Frequently asked questions

What is CVE-2025-26528?: CVE-2025-26528 is a low-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 3.4/10. Published 2025-02-24.
How severe is CVE-2025-26528?: Low severity. CVSS v3 base score is 3.4 out of 10.