CVE-2026-15731: WP Multilang – Translation and Multilingual Plugin <= 2.4.31 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Content
The WP Multilang – Translation and Multilingual Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the post content in all versions up to, and including, 2.4.31 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs an authenticated WordPress account with Contributor-level permissions or higher. They must be able to submit post content containing the malicious script.
When does the injected script run?
The script is stored in an affected page and executes when a user accesses that injected page. This can affect users who view the page after the attacker has submitted the content.
Which plugin versions are affected?
All WP Multilang – Translation and Multilingual Plugin versions up to and including 2.4.31 are affected.