CVE-2026-89030

Blog2Social WordPress Plugin < 9.1.0 User Email Disclosure via b2s_search_user

Published: Sep 16, 2026Updated: Sep 24, 2026 Sources: CVE List NVDCWE-862

4.3MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:NIntegrity

None

A:NAvailability

None

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Weaknesses

CWE-862

Affected Products

Adenion

commercial

Blog2SocialMixed

Web & CMS Plugins / wordpress-plugin

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

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References

https://wordpress.org/plugins/blog2social/#developers

wordpress.org

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

vulncheck.com

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