CVE-2026-5200 Missing authorization in AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress
Authenticated subscribers can escalate privileges to administrator by modifying plugin configuration and exporting keys due to missing authorization checks.
- 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-2026-5200?
CVE-2026-5200 is a high-severity missing authorization vulnerability in acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress, published on 20 May 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 Missing Authorization in versions up to, and including, 10.8.2. 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 modify privileged AcyMailing configuration, export subscriber secret keys, and chain these actions into administrator account takeover when a target administrator email address is known.
Weakness: CWE-862
Which versions are affected by CVE-2026-5200?
How do I fix CVE-2026-5200?
No fix has been published for CVE-2026-5200 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-2026-5200 being exploited?
There is no known exploitation of CVE-2026-5200 in the wild and no public exploit code.
Sources
Also known as GHSA-54rj-qx28-9gcj.