CVE-2026-0735
User Language Switch <= 1.6.10 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'tab_color_picker_language_switch' Parameter
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | webilop |
| Product | user language switch |
| Published | Feb 14, 2026 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
webilop / User Language Switch
0 ≤ 1.6.10
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/c6f61e13-20fb-4cef-bae7-2cd5fa038175?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/user-language-switch/trunk/uls-options.php#L365 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/user-language-switch/tags/1.6.10/uls-options.php#L365
Credits
Bhumividh Treloges