CVE-2026-3614

Description

The AcyMailing plugin for WordPress is vulnerable to privilege escalation in all versions From 9.11.0 up to, and including, 10.8.1 due to a missing capability check on the `wp_ajax_acymailing_router` AJAX handler. This makes it possible for authenticated attackers, with Subscriber-level access and above, to access admin-only controllers (including configuration management), enable the autologin feature, create a malicious newsletter subscriber with an injected `cms_id` pointing to any WordPress user, and then use the autologin URL to authenticate as that user, including administrators.

CVSS breakdown

CVSS 3.1

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected products

acyba / AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress9.11.0 – 10.8.1

References

MISChttps://www.wordfence.com/threat-intel/vulnerabilities/id/a895e2cf-9eba-4c46-b19f-d008e1058f64?source=cve
MISChttps://plugins.trac.wordpress.org/browser/acymailing/tags/10.7.1/WpInit/Router.php#L11
MISChttps://plugins.trac.wordpress.org/browser/acymailing/trunk/WpInit/Router.php#L11
MISChttps://plugins.trac.wordpress.org/browser/acymailing/tags/10.7.1/WpInit/Router.php#L122
MISChttps://plugins.trac.wordpress.org/browser/acymailing/tags/10.7.1/WpInit/Router.php#L230
MISChttps://plugins.trac.wordpress.org/browser/acymailing/tags/10.7.1/back/Core/AcymController.php#L92
MISChttps://plugins.trac.wordpress.org/browser/acymailing/tags/10.8.1/back/Core/AcymController.php#L99