CVE-2026-92829: Blog2Social: Social Media Auto Post & Scheduler <= 9.1.0 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via Multiple AJAX Handlers
The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 9.1.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to view, modify, or delete other users' Blog2Social records, including disclosing another user's network authentication IDs and scheduled post content, overwriting Open Graph and Twitter Card post metadata on posts they do not own, rebinding another user's social-network authorization, and mass-hiding all users' scheduled posts sitewide. The plugin's b2ssecuritynonce is emitted on the post-edit meta box, which Contributors can render, making the nonce available to any authenticated user at that role level or above.
Affected Software
Event History
Frequently Asked Questions
Which users could realistically exploit this issue?
Any authenticated WordPress user with Contributor-level access or higher could exploit it. The required b2s_security_nonce is available because Contributors can render the post-edit meta box where it is emitted.
Does exploitation require administrator access or user interaction?
No administrator access or separate user interaction is indicated. The attack complexity is low, but the attacker must first have an authenticated account with at least the Contributor role.
What could an attacker change or access?
An attacker could view, modify, or delete other users' Blog2Social records, including scheduled-post content and network authentication IDs. They could also overwrite Open Graph and Twitter Card metadata on posts they do not own, rebind another user's social-network authorization, and mass-hide scheduled posts sitewide.