CVE-2026-39474 WordPress Post Duplicator plugin <= 3.0.10 - PHP Object Injection vulnerability
A contributor can exploit PHP object injection in the Post Duplicator plugin to potentially execute arbitrary code.
- 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-2026-39474?
CVE-2026-39474 is a high-severity unsafe deserialization vulnerability in metaphorcreations Post Duplicator, published on 15 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Contributor PHP Object Injection in Post Duplicator <= 3.0.10 versions.
Weakness: CWE-502
Which versions are affected by CVE-2026-39474?
How do I fix CVE-2026-39474?
No fix has been published for CVE-2026-39474 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-2026-39474 being exploited?
There is no known exploitation of CVE-2026-39474 in the wild and no public exploit code.
Sources
Also known as GHSA-gq8x-f6pq-64xj.