CVE-2023-2433: Yarpp Yet Another Related Posts Plugin

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

The YARPP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'className' parameter in versions up to, and including, 5.30.3 due to insufficient input sanitization and output escaping. This makes it possible for contributor-level attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Yarpp Yet Another Related Posts Plugin: up to and including 5.30.3

Published 2023-07-18. Last modified 2026-06-17.