Blog2Social WordPress Plugin < 9.1.0 Broken Access Control via b2s_calendar_move_post
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| pr-gateway | Blog2Social | before 9.1.0 | 9.1.0 | Patch available | CNA |
- Blog2Social Vendorpr-gateway Affected before 9.1.0 Fixed in 9.1.0 Patch available CNA
Remediation
- Fix · CNA Blog2Social (Adenion) Fixed in 9.1.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Adenion Blog2Social 9.1.0
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2026-60339 Blog2Social WordPress Plugin < 9.1.0 User Email Disclosure via b2s_search_userPriority LOW 24
- TI-2026-60338 Blog2Social WordPress Plugin < 9.1.0 User Enumeration via AJAX HandlerPriority LOW 24
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89031
- 2026-10-03 Alias added: GHSA-f53j-3ghj-6c45
References
Patch 1
More pr-gateway vulnerabilities
- TI-2022-02999 Blog2Social < 6.9.10 - Subscriber+ SQLi CVSS 3.1HIGH 8.8
- TI-2022-03000 Blog2Social < 6.9.10 - Subscriber+ SSRF CVSS 3.1MEDIUM 6.5
- TI-2023-03658 Blog2Social < 7.2.1 - Reflected XSS CVSS 3.1MEDIUM 6.1
- TI-2025-03671 Blog2Social: Social Media Auto Post & Scheduler < 8.4.0 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2019-10204 The Adenion Blog2Social plugin through 5.5.0 for WordPress allows SQL Injection. CVSS 3.1CRITICAL 9.8
- TI-2024-03309 Blog2Social: Social Media Auto Post & Scheduler <= 7.4.1 - Authenticated (Subscriber+) SQL Injection CVSS 3.1CRITICAL 9.9
Sources
- CVE-2026-89031 · CVE Program
- CVE-2026-89031 · NVD
- FIRST EPSS
- GHSA-f53j-3ghj-6c45 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences