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MEDIUM

User Language Switch <= 1.6.10 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'tab_color_picker_language_switch' Parameter

Published Feb 14, 2026

Description

The User Language Switch plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tab_color_picker_language_switch' parameter in all versions up to, and including, 1.6.10 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

Remediation

No remediation recorded yet.

References (3)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner Wordfence
Published Feb 14, 2026
Updated Apr 8, 2026
Reserved Jan 8, 2026
CISA Vulnrichment
Updated Feb 17, 2026
NVD
Status Deferred
Modified Jun 17, 2026
Red Hat
Severity n/a
Public date n/a