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CVE-2026-4330

4.3 · MEDIUM

The 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.

Published Apr 8, 2026CWE-639EPSS 0.49%

Overview

CVE-2026-4330 is a medium-severity vulnerability. It was published on April 8, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2178Refplugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2183Refplugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2273Refplugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2322Refplugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Post/Tools.php#L32Refplugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Ship/Save.php#L190Refplugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Loader.php#L2202Refplugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2178Refplugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2183Refplugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2273

How CyberStrike helps

Frequently asked questions

What is CVE-2026-4330?

CVE-2026-4330 is a medium-severity vulnerability. It was published on April 8, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-4330?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-4330?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-4330?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-4330 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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