WordPress security changelog
HIGH CVE-2026-3614 Deferred

AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress: Privilege escalation or authentication bypass

AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress is affected by privilege escalation or authentication bypass. Exploitation requires at least subscriber-level access. A successful request can grant permissions or access that the caller should not possess. The published affected range is 9.11.0 through 10.8.1.

CVE / CNA score 8.8 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress
Plugin slug
acymailing
Affected
9.11.0 through 10.8.1
Safe version
> 10.8.1
Published
Apr 16, 2026
Weakness
CWE-862 — Missing Authorization

This CVE was published Apr 16, 2026 and is one of 8 known issues for this plugin.

What to do

Update, patch or deactivate.

Update AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress to a release after 10.8.1, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources