CVE-2026-0735

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

CVSS 4.4 MEDIUMEPSS 0.2%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.4EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

14 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Affected products

webilop · User Language Switch

References

https://plugins.trac.wordpress.org/browser/user-language-switch/tags/1.6.10/uls-options.php#L365 https://plugins.trac.wordpress.org/browser/user-language-switch/trunk/uls-options.php#L365 https://www.wordfence.com/threat-intel/vulnerabilities/id/c6f61e13-20fb-4cef-bae7-2cd5fa038175?source=cve