CVE-2026-89030

Description

Adenion Blog2Social plugin for WordPress before 9.1.0 exposes the email addresses of all registered WordPress users to low-privileged accounts. The b2s_search_user AJAX handler in includes/Ajax/Get.php invokes B2S_Tools::searchUser() in includes/Tools.php, which returns the email address of every matching user without restricting access to callers holding the list_users capability, allowing any user with the edit_posts capability to retrieve user email addresses including those of administrators.

CVSS Vector

References

• https://wordpress.org/plugins/blog2social/#developers
• https://www.vulncheck.com/advisories/blog2social-wordpress-plugin-user-email-disclosure-via-b2s-search-user