What the vulnerability does
01Description
The Falang multilanguage for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.3.49 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions 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.
Explanation of Vulnerability in Simple Terms
02Summary
The Falang multilanguage plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in versions up to 1.3.49. An authenticated administrator with high privileges can inject malicious scripts that execute in the browsers of other site users. The vulnerability requires specific conditions to trigger and has limited scope, but can compromise user sessions and site integrity.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
A compromised admin account can inject persistent malicious code affecting all site visitors, potentially stealing credentials or modifying content.
Conditions required to exploit
05Prerequisites
Attacker must be logged in as a high-privilege administrator; no user interaction required from victims.
Key dates
06Disclosure timeline
May 10, 2024
CVE published
April 8, 2026
Record updated
