PT-2026-26854 · WordPress · Wikilookup

Published 2026-03-21 · Updated 2026-03-21 · CVE-2026-3354

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Wikilookup plugin for WordPress versions up to and including 1.1.5

Description The software is susceptible to Stored Cross-Site Scripting through the 'Popup Width' setting. Insufficient input sanitization and output escaping allow authenticated attackers with Administrator-level access or higher to inject arbitrary web scripts into pages. These scripts will execute when a user accesses the injected page. This issue only affects multi-site installations and installations where unfiltered html has been disabled.

Recommendations Update the Wikilookup plugin to a version later than 1.1.5.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-3354

Affected Products

Wikilookup

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-3354 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/d7526228-4e21-430c-90ad-1476c81698ad?source=cve · Note
• https://twitter.com/CVEnew/status/2035237239257763906 · Twitter Post
• https://plugins.trac.wordpress.org/browser/wikilookup/trunk/views/admin_wikilookup_display.php#L26 · Note
• https://plugins.trac.wordpress.org/browser/wikilookup/tags/1.1.5/views/admin_wikilookup_display.php#L26 · Note
• https://twitter.com/VulmonFeeds/status/2035302308225892861 · Twitter Post