CVE-2026-89029

Blog2Social WordPress Plugin < 9.1.0 User Enumeration via AJAX Handler

Published: Sep 16, 2026Updated: Sep 24, 2026 Sources: CVE List NVDCWE-639

4.3MEDIUM

Description

Adenion Blog2Social plugin for WordPress before 9.1.0 allows low-privileged users to enumerate WordPress user accounts. The b2s_get_select_mandant_user AJAX handler in includes/Ajax/Get.php resolves arbitrary user IDs supplied in the owner parameter to display names without verifying that the caller is authorized to read user account data, allowing any user with the edit_posts capability to map WordPress user IDs to display names and confirm account existence for arbitrary IDs.

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-639

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

1 technique

Initial Access

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References

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

wordpress.org

https://www.vulncheck.com/advisories/blog2social-wordpress-plugin-user-enumeration-via-ajax-handler

vulncheck.com

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