CVE-2026-10749 Post Duplicator < 3.0.15 - Contributor+ PHP Object Injection via customMetaData
Contributors can inject PHP objects via custom metadata in Post Duplicator, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-10749?
CVE-2026-10749 is a high-severity unsafe deserialization vulnerability in Unknown Post Duplicator, published on 24 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Post Duplicator WordPress plugin before 3.0.15 does not safely handle custom meta-data during post duplication, storing attacker-supplied serialized values without the WordPress meta API's double-serialization protection, allowing users with Contributor-level access and above to inject a PHP Object.
Which versions are affected by CVE-2026-10749?
How do I fix CVE-2026-10749?
No fix has been published for CVE-2026-10749 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-2026-10749 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10749 exists.
Sources
Also known as GHSA-57q8-6wvw-p94h.