CVE-2026-56053 WordPress EventPrime plugin <= 4.3.4.1 - PHP Object Injection vulnerability
A subscriber can exploit PHP object injection in the EventPrime plugin to potentially execute arbitrary code on the WordPress site.
- 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-2026-56053?
CVE-2026-56053 is a high-severity unsafe deserialization vulnerability in EventPrime, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Subscriber PHP Object Injection in EventPrime <= 4.3.4.1 versions.
Weakness: CWE-502
Which versions are affected by CVE-2026-56053?
How do I fix CVE-2026-56053?
No fix has been published for CVE-2026-56053 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-56053 being exploited?
There is no known exploitation of CVE-2026-56053 in the wild and no public exploit code.
Sources
Also known as GHSA-h5wm-8hx6-m9ff.