Custom Field Suite < 2.6.5 - Authenticated (Admin+) Stored Cross-Site Scripting

2024-02-2800:00:00

wpscan.com

wordpress

custom field suite

vulnerability

stored cross-site scripting

input sanitization

output escaping

meta import

administrator-level permissions

multi-site

unfiltered html

CVSS3

4.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.7

Confidence

High

EPSS

Percentile

9.0%

JSON

Description The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a meta import in all versions up to, and including, 2.6.4 due to insufficient input sanitization and output escaping on the meta values. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.