Is CVE-2026-89030 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-89030?

CVE-2026-89030 has a CVSS v3 severity of MEDIUM (4.3).

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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.