CVE-2026-53739: Yoast Duplicate Post

Medium severity, CVSS 4.3. EPSS: 0.1% chance of exploitation in the next 30 days.

Yoast Duplicate Post through 4.6 contains a cross-site request forgery vulnerability in the duplicate_post_dismiss_notice handler, which verifies no nonce or capability. Attackers can trick any authenticated user into sending a request that sets the duplicate_post_show_notice site option, suppressing admin notices network-wide.

Affected products

• Yoast Yoast Duplicate Post: up to and including 4.6

Published 2026-06-10. Last modified 2026-07-23.