Privilege Escalation Vulnerability in AcyMailing Plugin for WordPress
CVE-2026-3614

8.8HIGH

Key Information:

Vendor

WordPress
Status
Acymailing – An Ultimate Newsletter Plugin And Marketing Automation Solution For WordPress
Vendor
CVE Published:
16 April 2026

What is CVE-2026-3614?

The AcyMailing plugin for WordPress has a vulnerability that allows authenticated users with Subscriber-level access or higher to exploit a missing capability check on the wp_ajax_acymailing_router AJAX handler. This flaw enables attackers to gain unauthorized access to admin-only controllers, facilitate the auto-login feature, and manipulate newsletter subscribers by injecting a cms_id that refers to any WordPress user. As a result, attackers can authenticate as those users, including site administrators, potentially compromising sensitive site functionalities.

Affected Version(s)

AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress 9.11.0 <= 10.8.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/acymailing/tag...
https://plugins.trac.wordpress.org/browser/acymailing/tru...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ren Voza
.