CVE-2024-12554: Pkthree Peter’s Custom Anti-Spam

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The Peter’s Custom Anti-Spam plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.2.3. This is due to missing nonce validation on the cas_register_post() function. This makes it possible for unauthenticated attackers to blacklist emails via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• Pkthree Peter’s Custom Anti-Spam: up to and including 3.2.3

Published 2024-12-18. Last modified 2026-06-17.