PT-2026-26040 · WordPress · Yoast Duplicate Post

Johska · Published 2026-03-18 · Updated 2026-03-18 · CVE-2026-1217

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Yoast Duplicate Post plugin for WordPress versions prior to 4.6

Description The Yoast Duplicate Post plugin for WordPress has a flaw that allows unauthorized modification of data. This is due to a missing capability check in the clone bulk action handler() and republish request() functions. Authenticated attackers with Contributor-level access or higher can duplicate any post, including those marked as private, draft, or trashed, even if they should not have access. Attackers with Author-level access or higher can use the Rewrite & Republish feature to overwrite any published post with their own content.

Recommendations Update to version 4.6 or later. As a temporary workaround, restrict user roles to the minimum necessary permissions.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-1217

GHSA-G9W4-M5FX-X3WV

Affected Products

Yoast Duplicate Post

References · 7

• https://osv.dev/vulnerability/GHSA-g9w4-m5fx-x3wv · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1217 · Security Note
• https://github.com/Yoast-dist/duplicate-post · Note
• https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/handlers/bulk-handler.php#L115 · Note
• https://twitter.com/CVEnew/status/2034365307348033684 · Twitter Post
• https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/post-republisher.php#L128 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/05f175e6-08a9-4199-948c-5bd8b3caaa39?source=cve · Note