CVE-2026-4330
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.
Does this matter?
Lower severity and a low EPSS score (0.54%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.54% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2178
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2183
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2273
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2322
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Post/Tools.php#L32
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Ship/Save.php#L190
- https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Loader.php#L2202
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2178
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/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/trunk/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/trunk/includes/B2S/Ship/Save.php#L190
- https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Loader.php#L2202
- https://plugins.trac.wordpress.org/changeset/3494550/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f3eec9c6-fef9-4d6e-8328-51efb997c99c?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.