{"id":"GHSA-g9w4-m5fx-x3wv","aliases":["CVE-2026-1217"],"title":"Yoast Duplicate Post has an Authenticated (Contributor+) Missing Authorization to Arbitrary Post Duplication and Overwrite","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"MODERATE","description":"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content.","severity":"medium","score":5.4,"published":"2026-03-18T12:31:51.000Z","modified":"2026-03-19T19:56:20.581Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"yoast/duplicate-post","sources":[{"name":"OSV · GHSA-g9w4-m5fx-x3wv","url":"https://osv.dev/vulnerability/GHSA-g9w4-m5fx-x3wv"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"4.6"}],"type":"ECOSYSTEM"}],"versions":["4.1.2","4.2","4.2-RC1","4.3","4.3-RC1","4.4","4.4-RC1","4.4-RC2","4.4-RC3","4.5","4.5-RC1","4.6-RC1","4.6-RC2"],"fixed":["4.6"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-1217","https://github.com/Yoast-dist/duplicate-post","https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/handlers/bulk-handler.php#L115","https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/post-republisher.php#L128","https://www.wordfence.com/threat-intel/vulnerabilities/id/05f175e6-08a9-4199-948c-5bd8b3caaa39?source=cve"],"sources":[{"name":"OSV","id":"GHSA-g9w4-m5fx-x3wv","modified":"2026-03-19T19:56:20.581613Z","url":"https://osv.dev/vulnerability/GHSA-g9w4-m5fx-x3wv"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T01:35:32.302Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}