CVE-2026-57740 WordPress AcyMailing SMTP Newsletter plugin <= 10.11.1 - Broken Access Control vulnerability
Attackers can bypass access controls in the AcyMailing SMTP Newsletter plugin to perform unauthorized actions.
- 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-2026-57740?
CVE-2026-57740 is a high-severity missing authorization vulnerability in AcyMailing SMTP Newsletter, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Missing Authorization vulnerability in AcyMailing Newsletter Team AcyMailing SMTP Newsletter acymailing allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects AcyMailing SMTP Newsletter: from n/a through <= 10.11.1.
Weakness: CWE-862
Which versions are affected by CVE-2026-57740?
How do I fix CVE-2026-57740?
No fix has been published for CVE-2026-57740 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-2026-57740 being exploited?
There is no known exploitation of CVE-2026-57740 in the wild and no public exploit code.
Sources
Also known as GHSA-pv5g-pfq4-mqxr.