WordPress security changelog
HIGH CVE-2025-49064 Deferred

User Language Switch: Cross-site scripting

User Language Switch is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.

CVE / CNA score 7.1 CVSS 3.1 · audit@patchstack.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
User Language Switch
Plugin slug
user-language-switch
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Aug 14, 2025
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Aug 14, 2025 and is one of 3 known issues for this plugin.

Update, patch or deactivate.

Update User Language Switch to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Webilop User Language Switch user-language-switch allows Reflected XSS.This issue affects User Language Switch: from n/a through <= 1.6.10.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Primary and upstream sources