Blog2Social: Social Media Auto Post & Scheduler <= 9.1.0 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via Multiple AJAX Handle
The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 9.1.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to view, modify, or delete other users' Blog2Social records, including disclosing another user's network authentication IDs and scheduled post content, overwriting Open Graph and Twitter Card post metadata on posts they do not own, rebinding another user's social-network authorization, and mass-hiding all users' scheduled posts sitewide. The plugin's b2s_security_nonce is emitted on the post-edit meta box, which Contributors can render, making the nonce available to any authenticated user at that role level or above.
- Published
- Sep 25, 2026
- Updated
- Sep 25, 2026
- EPSS
- 0.3% · 23th percentile
- CWE
- CWE-862
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Report tools
Action score
17
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · Wordfence
- 4.3
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
—
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Wordfence). Independent of NVD's CPE analysis and usually ahead of it.
pr-gateway Blog2Social: Social Media Auto Post & Scheduler
- up to and including 9.1.0affected · semver
Same product
pr-gateway: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-1942Blog2Social: Social Media Auto Post & Scheduler <= 8.7.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Modification26Monitor
- CVE-2025-5673Blog2Social <= 8.4.4 - Authenticated (Subscriber+) SQL Injection via `prgSortPostType` Parameter26Monitor
- CVE-2026-7051Blog2Social: Social Media Auto Post & Scheduler <= 8.9.0 - Missing Authorization to Authenticated (Subscriber+) Delete Arbitrary B2S Post Records via 'postId' P21Monitor
- CVE-2025-13558Blog2Social <= 8.7.0 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Trashing21Monitor
- CVE-2026-4330Blog2Social: Social Media Auto Post & Scheduler <= 8.8.3 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Post Schedule Modification 17Monitor
- CVE-2026-4331Blog2Social: Social Media Auto Post & Scheduler <= 8.8.2 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Meta Deletion via 'b2s_reset_soci17Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-1942219 days apartBlog2Social: Social Media Auto Post & Scheduler <= 8.7.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Modification26Monitor
- CVE-2026-7051135 days apartBlog2Social: Social Media Auto Post & Scheduler <= 8.9.0 - Missing Authorization to Authenticated (Subscriber+) Delete Arbitrary B2S Post Records via 'postId' P21Monitor
- CVE-2025-13558304 days apartBlog2Social <= 8.7.0 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Trashing21Monitor
- CVE-2026-4331183 days apartBlog2Social: Social Media Auto Post & Scheduler <= 8.8.2 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Meta Deletion via 'b2s_reset_soci17Monitor
- CVE-2025-12563323 days apartBlog2Social: Social Media Auto Post & Scheduler <= 8.6.0 - Incorrect Authorization to Video File Upload17Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-862 · Missing AuthorizationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.0/includes/Ajax/Get.php#L695
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.0/includes/Ajax/Post.php#L1859
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.0/includes/Ajax/Post.php#L2302
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.0/includes/Ajax/Post.php#L2572
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.0/includes/Ajax/Post.php#L4475
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.0/includes/B2S/Calendar/Filter.php#L218
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.0/includes/B2S/Post/Tools.php#L166
- plugins.trac.wordpress.org/browser/blog2social/tags/9.1.1/includes/Ajax/Post.php
- www.wordfence.com/threat-intel/vulnerabilities/id/c712972d-c6b2-46be-8c93-27a7e7c920a0?source=cve
Vendor advisories and official records. Exploit/PoC links are deliberately left out.