User Language Switch Plugin up to 1.6.10 on WordPress tab_color_picker_language_switch cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in User Language Switch Plugin up to 1.6.10 on WordPress. The impacted element is an unknown function. This manipulation of the argument tab_color_picker_language_switch causes cross site scripting. The identification of this vulnerability is CVE-2026-0735. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in User Language Switch Plugin up to 1.6.10 on WordPress. Affected by this vulnerability is an unknown code. The manipulation of the argument tab_color_picker_language_switch with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-0735. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Name

• User Language Switch Plugin

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5
• 1.6.6
• 1.6.7
• 1.6.8
• 1.6.9
• 1.6.10

CPE 2.3info

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• 🔒
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CPE 2.2info

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