CVE-2026-4330
Blog2Social: Social Media Auto Post & Scheduler <= 8.8.3 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Post Schedule Modification via 'b2s_id' Parameter
- State
- Published
- Severity
- 4.3 Medium
- Published
- Apr 8, 2026
- Updated
- Apr 8, 2026
- Reserved
- Mar 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N | Wordfence |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
Blog2Social: Social Media Auto Post & Schedulerpr-gateway |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f3eec9c6-fef9-4d6e-8328-51efb997c99c?source=cve
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2183
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2183
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2273
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2273
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2322
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2322
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Post/Tools.php#L32
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Post/Tools.php#L32
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Ship/Save.php#L190
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Ship/Save.php#L190
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2178
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2178
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Loader.php#L2202
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Loader.php#L2202
- https://plugins.trac.wordpress.org/changeset/3494550/
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