CVE-2026-89031: Adenion BLOG2SOCIAL

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Adenion Blog2Social plugin for WordPress before 9.1.0 allows low-privileged users to modify the scheduled post records of other users. The b2s_calendar_move_post AJAX handler in includes/Ajax/Post.php issues an UPDATE against the b2s_posts table using only the attacker-supplied b2s_id primary key with no blog_user_id ownership constraint, allowing any user with the edit_posts capability to reschedule, suppress, or alter the publication state of any other user's scheduled social media post.

Affected products

• Adenion BLOG2SOCIAL: before 9.1.0 (fixed in 9.1.0)

Published 2026-09-16. Last modified 2026-09-24.