CVE-2026-4331

Description

The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to unauthorized data loss in all versions up to, and including, 8.8.2. This is due to the resetSocialMetaTags() function only verifying that the user has the 'read' capability and a valid b2s_security_nonce, both of which are available to Subscriber-level users, as the plugin grants 'blog2social_access' capability to all roles upon activation, allowing them to access the plugin's admin pages where the nonce is output. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete all _b2s_post_meta records from the wp_postmeta table, permanently removing all custom social media meta tags for every post on the site.

PUBLISHED Reserved 2026-03-17 | Published 2026-03-26 | Updated 2026-04-08 | Assigner Wordfence

Problem types

CWE-862 Missing Authorization

Product status

Timeline

Credits

Mariusz Maik finder

References

www.wordfence.com/...-ecfb-438f-b951-7b957489cd96?source=cve

plugins.trac.wordpress.org/...l/trunk/includes/Ajax/Post.php

plugins.trac.wordpress.org/...s/8.8.2/includes/Ajax/Post.php

plugins.trac.wordpress.org/...l/trunk/includes/Ajax/Post.php

plugins.trac.wordpress.org/...s/8.8.2/includes/Ajax/Post.php

plugins.trac.wordpress.org/...l/trunk/includes/Ajax/Post.php

plugins.trac.wordpress.org/...s/8.8.2/includes/Ajax/Post.php

plugins.trac.wordpress.org/...cial/trunk/includes/Loader.php

plugins.trac.wordpress.org/...tags/8.8.2/includes/Loader.php

plugins.trac.wordpress.org/...s/8.8.3/includes/Ajax/Post.php

cve.org (CVE-2026-4331)

nvd.nist.gov (CVE-2026-4331)

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