CVE-2026-3614
Received Received - Intake

Privilege Escalation in AcyMailing Plugin via Missing Capability Check

Publication date: 2026-04-16

Last updated on: 2026-04-16

Assigner: Wordfence

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 Scores

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Meta Information

Published
2026-04-16
Last Modified
2026-04-16
Generated
2026-07-26
AI Q&A
2026-04-16
EPSS Evaluated
2026-07-25
NVD
CVE-2026-3614
EUVD
EUVD-2026-23188

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
acyba acymailing From 9.11.0 (inc) to 10.8.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

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Executive Summary

The AcyMailing plugin for WordPress has a vulnerability in versions 9.11.0 through 10.8.1 caused by a missing capability check on the wp_ajax_acymailing_router AJAX handler.

This flaw allows authenticated users with Subscriber-level access or higher to escalate their privileges by accessing admin-only controllers, including configuration management.

Attackers can enable the autologin feature, create a malicious newsletter subscriber with an injected cms_id linked to any WordPress user, and then use the autologin URL to authenticate as that user, including administrators.

Impact Analysis

This vulnerability can lead to a serious security breach by allowing attackers with low-level access to gain administrator privileges.

Once escalated, attackers can control the WordPress site, modify configurations, and potentially compromise sensitive data.

The CVSS score of 8.8 indicates a high severity impact on confidentiality, integrity, and availability.

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