{"id":"BIT-wordpress-2026-3906","summary":"WordPress 6.9 - 6.9.1 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Note Creation via REST API","details":"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.","aliases":["BIT-wordpress-multisite-2026-3906","CVE-2026-3906"],"modified":"2026-03-14T01:55:59.480921Z","published":"2026-03-13T09:17:59.157Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://core.trac.wordpress.org/browser/trunk/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php#L562"},{"type":"WEB","url":"https://core.trac.wordpress.org/changeset/61888"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3906"},{"type":"WEB","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/a69782f0-aa61-4049-8339-7f27f4b6c36b?source=cve"}],"affected":[{"package":{"name":"wordpress","ecosystem":"Bitnami","purl":"pkg:bitnami/wordpress"},"ranges":[{"type":"SEMVER","events":[{"introduced":"6.9.0"},{"fixed":"6.9.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/wordpress/BIT-wordpress-2026-3906.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}],"schema_version":"1.7.5"}