What the vulnerability does
01Description
The Website LLMs.txt plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in all versions up to, and including, 8.2.6. This is due to the use of filter_input() without a sanitization filter and insufficient output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick an administrator into performing an action such as clicking on a link.
Explanation of Vulnerability in Simple Terms
02Summary
Website LLMs.txt versions 8.2.6 and earlier contain a cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts that execute in a victim's browser when they visit a crafted page. The vulnerability requires user interaction and affects the integrity and confidentiality of user sessions. Update to a version newer than 8.2.6.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in a victim's browser and steal session data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Visitors' browsers can be compromised; attackers may steal cookies, session tokens, or perform unauthorized actions as the victim.
Conditions required to exploit
05Prerequisites
Victim must visit a page containing the attacker's malicious input; no authentication required.
Key dates
06Disclosure timeline
April 21, 2026
CVE published
April 21, 2026
Record updated
