CVE-2022-4830: Paid Memberships Pro < 2.9.9 - Contributor+ Stored XSS via Shortcode

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 65.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-02-13 · updated 2026-06-17
Weakness: CWE-79

Description

The Paid Memberships Pro WordPress plugin before 2.9.9 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.

Affected products

Paid Memberships Pro: before 2.9.9 — fixed in 2.9.9

How to fix

Upgrade to a fixed version: Paid Memberships Pro 2.9.9. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/ae103336-a411-4ebf-a5f0-2f35701e364c
https://wpscan.com/vulnerability/ae103336-a411-4ebf-a5f0-2f35701e364c

Get alerted when CVE-2022-4830 or the next vulnerability affects your stack