Blog2Social: Social Media Auto Post & Scheduler <= 8.8.3 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Post Schedule Modification via 'b2s_id' Parameter

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-4330
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-08 08:16:23 UTC
Updated2026-04-08 21:26:35 UTC
DescriptionThe 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 'b2s_id' 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.000420000 probability, percentile 0.125450000 (date 2026-04-14)

Problem Types: CWE-639 | CWE-639 CWE-639 Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Pr-gateway Blog2Social Social Media Auto Post Scheduler affected 8.8.3 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Loader.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/f3eec9c6-fef9-4d6e-8328-51efb... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Post/Tools.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Post/Tools.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3494550 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Ship/Save.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Ship/Save.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Loader.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Mariusz Maik (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-17T14:06:50.000ZVendor Notified
CNA2026-04-07T19:13:42.000ZDisclosed
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