Description
The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to authorization bypass through user-controlled key in all versions up to, and including, 8.8.3. This is due to the plugin's AJAX handlers failing to validate that the user-supplied 'b2s_id' parameter belongs to the current user before performing UPDATE and DELETE operations. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify, reschedule, or delete other users' scheduled social media posts.
Problem types
CWE-639 Authorization Bypass Through User-Controlled Key
Product status
Any version
Timeline
| 2026-03-17: | Vendor Notified |
| 2026-04-07: | Disclosed |
Credits
Mariusz Maik
References
www.wordfence.com/...-fef9-4d6e-8328-51efb997c99c?source=cve
plugins.trac.wordpress.org/...l/trunk/includes/Ajax/Post.php
plugins.trac.wordpress.org/...s/8.8.2/includes/Ajax/Post.php
plugins.trac.wordpress.org/...l/trunk/includes/Ajax/Post.php
plugins.trac.wordpress.org/...s/8.8.2/includes/Ajax/Post.php
plugins.trac.wordpress.org/...l/trunk/includes/Ajax/Post.php
plugins.trac.wordpress.org/...s/8.8.2/includes/Ajax/Post.php
plugins.trac.wordpress.org/...nk/includes/B2S/Post/Tools.php
plugins.trac.wordpress.org/....2/includes/B2S/Post/Tools.php
plugins.trac.wordpress.org/...unk/includes/B2S/Ship/Save.php
plugins.trac.wordpress.org/...8.2/includes/B2S/Ship/Save.php
plugins.trac.wordpress.org/...l/trunk/includes/Ajax/Post.php
plugins.trac.wordpress.org/...s/8.8.2/includes/Ajax/Post.php
plugins.trac.wordpress.org/...cial/trunk/includes/Loader.php
plugins.trac.wordpress.org/...tags/8.8.2/includes/Loader.php
plugins.trac.wordpress.org/changeset/3494550/