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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/handlers…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/duplicate-post/tags/4.5/src/post-rep…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/05f175e6-08a9-4199-94…
security@wordfence.com