CVE-2026-18437 MailPress <= 1.5.0 - Missing Authorization to Unauthenticated Contact Updates
Unauthenticated attackers can update contact details in the MailerPress WordPress plugin due to a missing capability check on the contact endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18437?
CVE-2026-18437 is a medium-severity missing authorization vulnerability in MailerPress – Newsletter, email marketing & AI automation, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The MailerPress – Newsletter, email marketing & AI automation plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the `mailerpress/v1/contact` endpoint in all versions up to, and including, 1.5.0. This makes it possible for unauthenticated attackers to update contact details.
Weakness: CWE-862
Which versions are affected by CVE-2026-18437?
How do I fix CVE-2026-18437?
No fix has been published for CVE-2026-18437 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-2026-18437 being exploited?
There is no known exploitation of CVE-2026-18437 in the wild and no public exploit code.
Sources
Also known as GHSA-gjcp-gv56-hccw.