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8.3
HIGH CVSS 3.1
CVE-2023-40000
WordPress LiteSpeed Cache plugin <= 5.7 - Unauthenticated Site Wide Stored XSS vulnerability
Description

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.

INFO

Published Date :

April 16, 2024, 6:15 p.m.

Last Modified :

June 10, 2025, 1:12 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2023-40000 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Litespeedtech litespeed_cache
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
This information is provided by the 3rd party feeds.
  • Update the 'LiteSpeed Cache' plugin to version 5.7.0.1 or later through the administrative dashboard.
Public PoC/Exploit Available at Github

CVE-2023-40000 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-40000.

URL Resource
https://patchstack.com/database/vulnerability/litespeed-cache/wordpress-litespeed-cache-plugin-5-7-unauthenticated-site-wide-stored-xss-vulnerability?_s_id=cve Third Party Advisory
https://patchstack.com/database/vulnerability/litespeed-cache/wordpress-litespeed-cache-plugin-5-7-unauthenticated-site-wide-stored-xss-vulnerability?_s_id=cve Third Party Advisory
https://github.com/rxerium/CVE-2023-40000 Exploit
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-40000 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-40000 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
zhanpengliu-tencent/medium-cve

None

Updated: 3 weeks, 5 days ago
0 stars 0 fork 0 watcher
Born at : Aug. 15, 2025, 9:07 a.m. This repo has been linked 310 different CVEs too.
Profile Photo
iveresk/cve-2023-40000

That's a PoC of cve-2023-40000. Wordpress LiteSpeed Cache exploit.

Shell

Updated: 1 year, 2 months ago
1 stars 0 fork 0 watcher
Born at : May 13, 2024, 3:25 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
quantiom/litespeed-cache-xss-poc

PoC for XSS vulnerability in the LiteSpeed Cache WordPress plugin (CVE-2023-40000) allowing elevated privileges. Includes code, explanations, and mitigations.

wordpress xss litespeed-cache

JavaScript

Updated: 7 months ago
4 stars 0 fork 0 watcher
Born at : May 12, 2024, 6:13 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
rxerium/CVE-2023-40000

LiteSpeed Cache plugin for WordPress that could enable unauthenticated users to escalate their privileges

detection vulnerability wordpress wordpress-plugin

Updated: 9 months, 3 weeks ago
6 stars 0 fork 0 watcher
Born at : Feb. 28, 2024, 7:36 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
rxerium/stars

A list of all of my starred repos, automated using Github Actions 🌟

github-actions stars

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : Jan. 4, 2023, 11:20 a.m. This repo has been linked 20 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-40000 vulnerability anywhere in the article.

  • BleepingComputer
LiteSpeed Cache WordPress plugin bug lets hackers get admin access

The free version of the popular WordPress plugin LiteSpeed Cache has fixed a dangerous privilege elevation flaw on its latest release that could allow unauthenticated site visitors to gain admin right ... Read more

Published Date: Oct 31, 2024 (10 months, 1 week ago)
  • BleepingComputer
LiteSpeed Cache bug exposes 6 million WordPress sites to takeover attacks

Yet, another critical severity vulnerability has been discovered in LiteSpeed Cache, a caching plugin for speeding up user browsing in over 6 million WordPress sites. The flaw, tracked as CVE-2024-440 ... Read more

Published Date: Sep 05, 2024 (1 year ago)
  • Help Net Security
Adversaries love bots, short-lived IP addresses, out-of-band domains

Fastly found 91% of cyberattacks – up from 69% in 2023 – targeted multiple customers using mass scanning techniques to uncover and exploit software vulnerabilities, revealing an alarming trend in atta ... Read more

Published Date: Aug 26, 2024 (1 year ago)
  • BleepingComputer
Hackers are exploiting critical bug in LiteSpeed Cache plugin

Hackers have already started to exploit the critical severity vulnerability that affects LiteSpeed Cache, a WordPress plugin used for accelerating response times, a day after technical details become ... Read more

Published Date: Aug 22, 2024 (1 year ago)
  • The Hacker News
Critical Flaw in WordPress LiteSpeed Cache Plugin Allows Hackers Admin Access

Website Security / Vulnerability Cybersecurity researchers have disclosed a critical security flaw in the LiteSpeed Cache plugin for WordPress that could permit unauthenticated users to gain administr ... Read more

Published Date: Aug 22, 2024 (1 year ago)
  • BleepingComputer
Litespeed Cache bug exposes millions of WordPress sites to takeover attacks

A critical vulnerability in the LiteSpeed Cache WordPress plugin can let attackers take over millions of websites after creating rogue admin accounts. LiteSpeed Cache is open-source and the most popul ... Read more

Published Date: Aug 21, 2024 (1 year ago)
  • Cybersecurity News
CVE-2024-28000 (CVSS 9.8): Active Exploitation of Litespeed Cache Vulnerability, 5 Million WordPress Sites at Risk of Complete Takeover

A critical security vulnerability (CVE-2024-28000, CVSS 9.8) in the widely-used Litespeed Cache plugin for WordPress has been disclosed, leaving over 5 million websites at risk of complete takeover. T ... Read more

Published Date: Aug 21, 2024 (1 year ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-40000 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Jun. 10, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Added CPE Configuration OR *cpe:2.3:a:litespeedtech:litespeed_cache:*:*:*:*:*:wordpress:*:* versions up to (excluding) 5.7.0.1
    Added Reference Type CISA-ADP: https://github.com/rxerium/CVE-2023-40000 Types: Exploit
    Added Reference Type CVE: https://patchstack.com/database/vulnerability/litespeed-cache/wordpress-litespeed-cache-plugin-5-7-unauthenticated-site-wide-stored-xss-vulnerability?_s_id=cve Types: Third Party Advisory
    Added Reference Type Patchstack: https://patchstack.com/database/vulnerability/litespeed-cache/wordpress-litespeed-cache-plugin-5-7-unauthenticated-site-wide-stored-xss-vulnerability?_s_id=cve Types: Third Party Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/rxerium/CVE-2023-40000
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://patchstack.com/database/vulnerability/litespeed-cache/wordpress-litespeed-cache-plugin-5-7-unauthenticated-site-wide-stored-xss-vulnerability?_s_id=cve
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by [email protected]

    Apr. 16, 2024

    Action Type Old Value New Value
    Added Description 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.
    Added Reference Patchstack https://patchstack.com/database/vulnerability/litespeed-cache/wordpress-litespeed-cache-plugin-5-7-unauthenticated-site-wide-stored-xss-vulnerability?_s_id=cve [No types assigned]
    Added CWE Patchstack CWE-79
    Added CVSS V3.1 Patchstack AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact