Plugins · user-language-switch · data as of 2026-11-04
Is User Language Switch safe? Known vulnerabilities and latest version
- Status
- Closed 2026-02-12
- Known issues on record
- 3
- Unpatched in latest
- 0
What to do
- Replace it. A closed plugin gets no updates through WordPress, so any hole found from now on stays open.
- Deactivate and delete it once you have a replacement (Plugins → Deactivate → Delete). Deleting removes its files; deactivating alone leaves them on the server.
- If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan, or have us clean it: Emergency Cleanup, $499.
With WP-CLI, once you have a replacement: wp plugin deactivate user-language-switch && wp plugin delete user-language-switch
Check your version
Known vulnerabilities
3 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version. 3 record(s) do not state which versions are affected.
medium 5.5 CVE-2026-0745 · published 2026-02-14
Server-side request forgery (SSRF) in User Language Switch (1.6.10 and older)
- Affected
- 1.6.10 and older
- Fixed in
- unknown
- Access needed (per CVSS)
- Needs an admin-level account
- Range from
- CVE record (the advisory publisher) · score by Wordfence
Details from the advisory
The User Language Switch plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.6.10 due to missing URL validation on the 'download_language()' function. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
NVD CVE-2026-0745Wordfence advisorywordpress.orgdownloads.wordpress.orgPlugin source
medium 4.4 CVE-2026-0735 · published 2026-02-14
Stored cross-site scripting (XSS) in User Language Switch (1.6.10 and older)
- Affected
- 1.6.10 and older
- Fixed in
- unknown
- Access needed (per CVSS)
- Needs an admin-level account
- Range from
- CVE record (the advisory publisher) · score by Wordfence
Details from the advisory
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.
high 7.1 CVE-2025-49064 · published 2025-08-14
Reflected cross-site scripting (XSS) in User Language Switch (1.6.10 and older)
- Affected
- 1.6.10 and older
- Fixed in
- unknown
- Access needed (per CVSS)
- No login needed; someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
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.
Recent activity
- 2026-02-12 — closed on wordpress.org (Security Issue).
- 2026-02-14 — Server-side request forgery (SSRF) disclosed (CVE-2026-0745), fix version not stated.
- 2026-02-14 — Stored cross-site scripting (XSS) disclosed (CVE-2026-0735), fix version not stated.
- 2025-08-14 — Reflected cross-site scripting (XSS) disclosed (CVE-2025-49064), fix version not stated.
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Browse vulnerabilities
Types found in this plugin: Cross-site scripting (XSS) (2) · Server-side request forgery (SSRF) (1)
Where this data comes from
- Version, last update, installs, closure: wordpress.org/plugins/user-language-switch (Plugins API), fetched 2026-11-04.
- Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
- Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.
Badge for your site or docs (states facts with a date, not a verdict):
<a href="https://laskyr.com/plugins/user-language-switch"><img src="https://laskyr.com/plugins/user-language-switch/badge.svg" alt="User Language Switch vulnerability status"></a>