CVE-2026-15426
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
The AcyMailing plugin for WordPress up to version 10.11.1 has an authorization bypass vulnerability. An authenticated attacker with subscriber-level access can overwrite the BCC field of the acy_notification_cms notification template, causing WordPress password reset emails, including those for administrators, to be silently copied to an attacker-controlled address, enabling account takeover.
Risk Assessment
The attack can lead to administrator account takeover by intercepting password reset links, posing a serious threat to the security of the entire WordPress installation.
Recommendation
Update the plugin to the latest version immediately and disable the option to send WordPress emails through AcyMailing if not necessary.
Original NVD description (English source)
The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 10.11.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the BCC field of the acy_notification_cms notification template, causing subsequent WordPress password-reset emails — including those targeting administrator accounts — to be silently copied to an attacker-controlled address, enabling account takeover via the captured reset link. Successful exploitation requires the site administrator to have enabled the "Send website emails with AcyMailing" option, which routes WordPress core notification emails through AcyMailing's templating system.