What’s Vulnerable › Vulnerabilities

CVE-2023-6855: Paid Memberships Pro <= 2.12.5 - Missing Authorization via API

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-11 · updated 2026-06-17
• Weakness: CWE-862

Description

The Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions plugin for WordPress is vulnerable to unauthorized modification of membership levels created by the plugin due to an incorrectly implemented capability check in the pmpro_rest_api_get_permissions_check function in all versions up to 2.12.5 (inclusive). This makes it possible for unauthenticated attackers to change membership levels including prices.

Affected products

• Paid Memberships Pro: through 2.12.5

References

• https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528
• https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997
• https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve
• https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L528
• https://plugins.trac.wordpress.org/browser/paid-memberships-pro/trunk/includes/rest-api.php#L997
• https://plugins.trac.wordpress.org/changeset/3011575/paid-memberships-pro/trunk/includes/rest-api.php?contextall=1&old=2947813&old_path=%2Fpaid-memberships-pro%2Ftrunk%2Fincludes%2Frest-api.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/383c7837-e7b7-4608-9cdc-91b7dbc7f4e2?source=cve

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