CVE-2026-56063 WordPress MailChimp Block plugin <= 1.1.15 - Broken Access Control vulnerability
Unauthenticated attackers can bypass access controls in the MailChimp Block plugin, potentially exposing protected functionality or data.
- 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-2026-56063?
CVE-2026-56063 is a high-severity missing authorization vulnerability in bPlugins MailChimp Block, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
Weakness: CWE-862
Which versions are affected by CVE-2026-56063?
How do I fix CVE-2026-56063?
No fix has been published for CVE-2026-56063 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-2026-56063 being exploited?
There is no known exploitation of CVE-2026-56063 in the wild and no public exploit code.
Sources
Also known as GHSA-h75p-rhw9-w8q8.