CVE-2023-40000 HIGH

CVE-2023-40000: WordPress LiteSpeed Cache plugin <= 5.7 - Unauthenticated Site Wide Stored XSS vulnerability

Vendor Litespeed Technologies
Product LiteSpeed Cache
Weakness CWE-79 · XSS
Published April 16, 2024
Last update April 28, 2026

CVSS base score

8.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LiteSpeed Technologies LiteSpeed Cache allows Stored XSS.This issue affects LiteSpeed Cache: from n/a through 5.7.

Explanation of Vulnerability in Simple Terms

02Summary

LiteSpeed Cache versions up to 5.7 contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into web pages. No authentication or user interaction is required for exploitation. The vulnerability can affect multiple users and compromise site integrity. Site administrators should update to a version newer than 5.7.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in visitors' browsers and steals data or performs actions on their behalf.

Potential impact on your site

04Site Impact

Visitors' browsers could execute attacker-controlled code, leading to credential theft, malware distribution, or defacement.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

April 16, 2024 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE