CVE-2026-89029

MEDIUM 4.3

Blog2Social WordPress Plugin < 9.1.0 User Enumeration via AJAX Handler

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
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-enumeration-via-ajax-handler

Credits

Choriyev Qahramon (ciprobe) VulnCheck