CVE-2026-89030

MEDIUM 4.3

Blog2Social WordPress Plugin < 9.1.0 User Email Disclosure via b2s_search_user

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	adenion
Product	blog2social
Published	Sep 16, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

Adenion / Blog2Social

0 < 9.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Choriyev Qahramon (ciprobe) VulnCheck