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    CVE-2026-89030

    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.

    Published:Sep 16, 2026
    Last Modified:Oct 1, 2026
    EPS:Sep 16, 2026
    EPSS Score:0.00281
    CVSS Score:4.3

    Affected Products

    Vendor
    Adenion
    Product
    Blog2social
    Vendor
    Wordpress
    Product
    Wordpress

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-56044 (CVSS 7.1) — Unauthenticated Cross Site Scripting (XSS) in Blog2Social <= 8.9.2 versions.…
    CVE-2025-4133 (CVSS 5.4) — The Blog2Social: Social Media Auto Post & Scheduler WordPress plugin before 8.4.0 does not escape the title of…
    CVE-2024-7302 (CVSS 6.4) — The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to Stored Cross-Site Sc…
    CVE-2024-3549 (CVSS 9.9) — The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to SQL Injection via th…
    CVE-2024-3678 (CVSS 5.3) — The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to Sensitive Informatio…
    CVE-2022-3622 (CVSS 4.1) — The Blog2Social plugin for WordPress is vulnerable to authorization bypass due to missing capability checks i…
    CVE-2023-40554 (CVSS 7.1) — Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Blog2Social, Adenion Blog2Social: Social Media A…
    CVE-2023-3936 (CVSS 6.1) — The Blog2Social WordPress plugin before 7.2.1 does not sanitise and escape a parameter before outputting it ba…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High