CVE-2021-24963

LiteSpeed Cache < 4.4.4 - Admin+ Reflected Cross-Site Scripting

Severity Score

4.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting

El plugin LiteSpeed Cache de WordPress versiones anteriores a 4.4.4, no escapa el parámetro qc_res antes de devolverlo al código JS de una página de administración, conllevando a un ataque de tipo Cross-Site Scripting Reflejado

The LiteSpeed Cache plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'qc_res' parameter in versions up to, and including, 4.4.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

*Credits: Emil Kylander

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-14 CVE Reserved
2021-11-30 CVE Published
2023-07-27 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://wpscan.com/vulnerability/7f8b4275-7586-4e04-afd9-d12bdab6ba9b	2024-08-03

URL	Date	SRC
https://plugins.trac.wordpress.org/changeset/2634373	2022-01-08

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Litespeedtech Search vendor "Litespeedtech"		Litespeed Cache Search vendor "Litespeedtech" for product "Litespeed Cache"				< 4.4.4 Search vendor "Litespeedtech" for product "Litespeed Cache" and version " < 4.4.4"		wordpress		Affected