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
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 'b2sid' 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-4330?
CVE-2026-4330 has a medium severity rating due to the potential for unauthorized access to post scheduling.
How do I fix CVE-2026-4330?
To fix CVE-2026-4330, update the Blog2Social plugin to version 8.8.4 or later.
Who is affected by CVE-2026-4330?
Any WordPress site using Blog2Social: Social Media Auto Post & Scheduler version 8.8.3 or earlier is affected by CVE-2026-4330.
What kind of vulnerability is CVE-2026-4330?
CVE-2026-4330 is an Authenticated Insecure Direct Object Reference vulnerability that allows unauthorized modification of post schedules.
What data is at risk due to CVE-2026-4330?
Due to CVE-2026-4330, attackers could potentially hijack and modify scheduled social media posts.