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.
History

Thu, 01 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:adenion:blog2social:*:*:*:*:*:wordpress:*:*

Thu, 17 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 05:00:00 +0000

Type Values Removed Values Added
First Time appeared Adenion
Adenion blog2social
Wordpress
Wordpress wordpress
Vendors & Products Adenion
Adenion blog2social
Wordpress
Wordpress wordpress

Wed, 16 Sep 2026 14:15:00 +0000

Type Values Removed Values Added
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.
Title Blog2Social WordPress Plugin < 9.1.0 User Enumeration via AJAX Handler
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-16T13:59:48.640Z

Updated: 2026-10-01T15:21:52.173Z

Reserved: 2026-09-10T16:23:54.472Z

Link: CVE-2026-89029

cve-icon Vulnrichment

Updated: 2026-09-17T19:16:40.789Z

cve-icon NVD

Status : Deferred

Published: 2026-09-16T14:17:13.040

Modified: 2026-09-24T21:08:55.030

Link: CVE-2026-89029

cve-icon Redhat

No data.