CVE-2026-89424

MediumCVSS 6.4

Published: 01/10/2026(UTC)Updated: 01/10/2026(UTC)Translated: 01/10/2026(UTC)NVD NIST

Summary

The Duplicate Post plugin for WordPress up to version 1.5.6 is vulnerable to Stored XSS via the 'noti_token' parameter. Insufficient input sanitization and output escaping allow authenticated attackers with subscriber-level access or higher to inject arbitrary scripts that execute when a user accesses an injected page. This requires the site owner to enable User Level Permissions for the Subscriber role.

Risk Assessment

The risk involves execution of malicious scripts in the context of any user visiting the infected page, potentially leading to data theft, session hijacking, or further attacks. The attack requires a low-privileged account but can affect all visitors.

Recommendation

Update the Duplicate Post plugin to the latest patched version. If not necessary, disable User Level Permissions for the Subscriber role to reduce the attack vector.

Other vulnerabilities in Duplicate Post

CVE-2026-19077Medium
The Duplicate Post plugin before version 1.5.5 does not perform per-object authorization checks in its bulk copy and delete operations. This allows any user whose role an administrator has granted access to the plugin to permanently delete arbitrary posts on the site, including those belonging to other users.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS