CVE-2026-15426 Missing authorization in AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress
Authenticated subscribers can overwrite notification templates to capture password reset links, enabling account takeover if specific email routing is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15426?
CVE-2026-15426 is a high-severity missing authorization vulnerability in acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-269
Which versions are affected by CVE-2026-15426?
How do I fix CVE-2026-15426?
No fix has been published for CVE-2026-15426 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-15426 being exploited?
There is no known exploitation of CVE-2026-15426 in the wild and no public exploit code.
Sources
Also known as GHSA-pw82-xvrp-3rqp.