CVE-2026-1217: Yoast Duplicate Post has an Authenticated (Contributor+) Missing Authorization to Arbitrary Post Duplication and Overwrite
(updated )
The Yoast Duplicate Post plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the clone_bulk_action_handler() and republish_request() functions in all versions up to, and including, 4.5. This makes it possible for authenticated attackers, with Contributor-level access and above, to duplicate any post on the site including private, draft, and trashed posts they shouldn’t have access to. Additionally, attackers with Author-level access and above can use the Rewrite & Republish feature to overwrite any published post with their own content.
References
- github.com/Yoast-dist/duplicate-post
- github.com/advisories/GHSA-g9w4-m5fx-x3wv
- nvd.nist.gov/vuln/detail/CVE-2026-1217
- plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/handlers/bulk-handler.php
- plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/post-republisher.php
- www.wordfence.com/threat-intel/vulnerabilities/id/05f175e6-08a9-4199-948c-5bd8b3caaa39?source=cve
Code Behaviors & Features
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