What is CVE-2026-0735?

CVE-2026-0735 is a medium-severity vulnerability in Webilop User Language Switch, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-02-14.

How severe is CVE-2026-0735?

Medium severity. CVSS v3 base score is 4.4 out of 10.

XSS in Webilop User Language Switch

CVE-2026-0735

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (14.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: 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 — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-0735?: CVE-2026-0735 is a medium-severity vulnerability in Webilop User Language Switch, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-02-14.
How severe is CVE-2026-0735?: Medium severity. CVSS v3 base score is 4.4 out of 10.