What is CVE-2026-3354?

CVE-2026-3354 is a medium-severity vulnerability in Mooeypoo Wikilookup, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-03-21.

How severe is CVE-2026-3354?

Medium severity. CVSS v3 base score is 4.4 out of 10.

XSS in Mooeypoo Wikilookup

CVE-2026-3354

The Wikilookup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Popup Width' setting in all versions up to, and including, 1.1.5. This is due to insufficient input sanitization and output escaping. This makes it p…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (12.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N.

Affected products

Mooeypoo Wikilookup — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.wordfence.com/threat-intel/vulnerabilities/id/d7526228-4e21-430c-90ad-1476c…
plugins.trac.wordpress.org/browser/wikilookup/trunk/views/admin_wikilookup_disp…
plugins.trac.wordpress.org/browser/wikilookup/tags/1.1.5/views/admin_wikilookup…

Frequently asked questions

What is CVE-2026-3354?: CVE-2026-3354 is a medium-severity vulnerability in Mooeypoo Wikilookup, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-03-21.
How severe is CVE-2026-3354?: Medium severity. CVSS v3 base score is 4.4 out of 10.