WordPress Plugin Vulnerabilities

Custom User Profile Fields for User Registration & Member Frontend Profiles with Paid Memberships Pro < 1.8.1 - Contributor+ Stored XSS via Shortcode

Description

The plugin does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

Proof of Concept

Exploit shortcode:

[pmpro_signup button='XSS" onmouseover="alert(1)"']

Dependency: Paid Memberships Pro plugin - https://wordpress.org/plugins/paid-memberships-pro

Affects Plugins

Plugin icon
pmpro-register-helper
Fixed in 1.8.1

References

CVE
CVE-2022-4831

Classification

Type
XSS
OWASP top 10
A7: Cross-Site Scripting (XSS)
CWE
CWE-79
CVSS
6.8 (medium)

Miscellaneous

Original Researcher
Lana Codes
Submitter
Lana Codes
Submitter website
https://lana.codes/
Submitter twitter
LanaCodes
Verified
Yes
WPVDB ID
872fc8e6-4035-4e5a-9f30-16c482c48c7c

Timeline

Publicly Published
2023-01-06 (about 1 years ago)
Added
2023-01-06 (about 1 years ago)
Last Updated
2023-01-06 (about 1 years ago)

Other

Published
Title
Published
2022-06-14
Title
WordPress Team Manager < 2.0.1 - Contributor+ Stored Cross-Site Scripting
Published
2023-10-16
Title
Mediabay <= 1.6 - Editor+ Stored XSS
Published
2023-09-25
Title
User Avatar - Reloaded < 1.2.2 - Contributor+ Stored XSS
Published
2024-04-05
Title
Powerkit – Supercharge your WordPress Site < 2.9.2 - Authenticated(Contributor+) Stored Cross-Site Scripting via Shortcode
Published
2024-04-16
Title
WP 404 Auto Redirect to Similar Post < 1.0.5 - Reflected Cross-Site Scripting via Debug Mode URI