CVE-2026-39713 Missing authorization in Mailercloud – Integrate webforms and synchronize website contacts
Attackers can bypass access controls in the Mailercloud WordPress plugin to perform unauthorized actions.
- 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-2026-39713?
CVE-2026-39713 is a medium-severity missing authorization vulnerability in Mailercloud – Integrate webforms and synchronize website contacts, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Missing Authorization vulnerability in mailercloud Mailercloud – Integrate webforms and synchronize website contacts mailercloud-integrate-webforms-synchronize-contacts allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Mailercloud – Integrate webforms and synchronize website contacts: from n/a through <= 1.0.7.
Weakness: CWE-862
Which versions are affected by CVE-2026-39713?
How do I fix CVE-2026-39713?
No fix has been published for CVE-2026-39713 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-2026-39713 being exploited?
There is no known exploitation of CVE-2026-39713 in the wild and no public exploit code.
Sources
Also known as GHSA-295f-cjg2-fv68.