CVE-2025-9889: Contentmx Content Publisher

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The ContentMX Content Publisher plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.6. This is due to missing or incorrect nonce validation on the cmx_activate_connection function. This makes it possible for unauthenticated attackers to bind their own ContentMX connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• Contentmx Contentmx Content Publisher: up to and including 1.0.6

Published 2025-10-03. Last modified 2026-10-08.