Description
WordPress core is vulnerable to unauthorized access in versions 6.9 through 6.9.1. The Notes feature (block-level collaboration annotations) was introduced in WordPress 6.9 to allow editorial comments directly on posts in the block editor. However, the REST API `create_item_permissions_check()` method in the comments controller did not verify that the authenticated user has `edit_post` permission on the target post when creating a note. This makes it possible for authenticated attackers with Subscriber-level access to create notes on any post, including posts authored by other users, private posts, and posts in any status.
Problem types
Product status
6.9 (semver)
Timeline
| 2026-03-10: | Disclosed |
Credits
kaminuma
References
www.wordfence.com/...-aa61-4049-8339-7f27f4b6c36b?source=cve
core.trac.wordpress.org/changeset/61888
core.trac.wordpress.org/...s-wp-rest-comments-controller.php