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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| yoast | Yoast Duplicate Post | ≤ 4.5 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | yoast/duplicate-post | < 4.6 | 4.6 | GHSA-g9w4-m5fx-x3wv |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/05f175e6-08a9-4199-948c-5bd8b3caaa39?source=cve
- 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