LiteSpeed Cache < 5.7.0.1 - Unauthenticated Stored XSS

2024-02-2900:00:00

wpscan.com

wordpress

xss

unauthenticated

CVSS3

8.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

8.2

Confidence

High

EPSS

Percentile

9.0%

JSON

Description The plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘nameservers’ and ‘_msg’ parameters due to insufficient input sanitization and output escaping, allowing unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

PoC

curl -X POST --data ‘success=0&result;[_msg]=’ https://example.com/wp-json/litespeed/v1/cdn_status The XSS will be triggered (once) when an admin will access any page of the backend