WordPress Plugin Vulnerabilities

Paid Memberships Pro < 2.9.9 - 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

1. Insert the following shortcode into a page/post:

[pmpro_checkout_button class='" onmouseover="alert(1)"']

2. Browse the page and hover over the button.

Affects Plugins

Plugin icon
paid-memberships-pro
Fixed in 2.9.9

References

CVE
CVE-2022-4830

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
ae103336-a411-4ebf-a5f0-2f35701e364c

Timeline

Publicly Published
2023-01-27 (about 10 months ago)
Added
2023-01-23 (about 10 months ago)
Last Updated
2023-01-23 (about 10 months ago)

Other

Published
Title
Published
2017-03-01
Title
Trust Form < 2.0.1 - Authenticated Reflected Cross-Site Scripting (XSS)
Published
2017-08-21
Title
Liveforms < 3.4.0 - XSS
Published
2022-10-13
Title
Rock Convert < 3.0.0 - Admin+ Stored XSS
Published
2023-09-03
Title
Post Affiliate Pro <= 1.26.5 - Admin+ Stored XSS
Published
2023-11-07
Title
Seo By 10Web <= 1.2.9 - Reflected XSS