CVE-2026-13414: Unknown Cmp

Medium severity, CVSS 4.8. EPSS: 0.1% chance of exploitation in the next 30 days.

The CMP WordPress plugin before 4.1.18 does not perform authorization checks on one of its AJAX actions and relies on a nonce that is skipped for certain (and exposed to anonymous visitors on others), allowing unauthenticated attackers to disable the site's maintenance/coming-soon mode under a non-default countdown configuration.

Affected products

• Unknown Cmp: before 4.1.18 (fixed in 4.1.18)

Published 2026-08-27. Last modified 2026-08-28.