[ CVE-2026-89424 · Published 1 Oct 2026 ]
Vulnerability in inisev Duplicate Post
[ Description ]Official description
The Duplicate Post plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noti_token' parameter in all versions up to, and including, 1.5.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires that the site owner has enabled the plugin's User Level Permissions for the Subscriber role, as this grants access to the i_saw_this_noti AJAX branch needed to deliver the payload.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ References ]References
- plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/menu/notifications.php
- plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/menu/notifications.php
- plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/post/handler.php
- plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/post/handler.php
- plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/post/handler.php
- plugins.trac.wordpress.org/changeset/3709767/copy-delete-posts/trunk/menu/notifications…
- plugins.trac.wordpress.org/changeset
- www.wordfence.com/threat-intel/vulnerabilities/id/c475c51e-f01d-4698-822f-5b8df999bf6d