What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LiteSpeed Technologies LiteSpeed Cache litespeed-cache allows Stored XSS.This issue affects LiteSpeed Cache: from n/a through <= 6.5.2.
Explanation of Vulnerability in Simple Terms
02Summary
LiteSpeed Cache versions up to 6.5.2 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other users, including administrators. The vulnerability requires user interaction to trigger. This affects the integrity and confidentiality of site data and user sessions.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers, potentially stealing session tokens or admin credentials.
Potential impact on your site
04Site Impact
Authenticated users can compromise other users' accounts and sessions, including administrator access, through stored XSS.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site; victim must visit a page containing the injected payload.
Key dates
06Disclosure timeline
February 20, 2026
CVE published
April 28, 2026
Record updated