CVE-2026-89031Blog2Social WordPress Plugin < 9.1.0 Broken Access Control via b2s_calendar_move_post
Updated under an hour ago ()
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It affects Adenion Blog2Social. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Adenion Blog2Social adenion:blog2social (from the name) | before 9.1.0 | CNA record |
References
- https://wordpress.org/plugins/blog2social/#developersrelease-notes, patch
- https://www.vulncheck.com/advisories/blog2social-wordpress-plugin-broken-access-control-via-b2s-calendar-move-postthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.