CVE-2026-16297 Clearfy < 2.4.3 - Admin+ PHP Object Injection via Settings Import
Administrators can trigger PHP object injection via settings import in Clearfy Cache, potentially leading to remote 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-2026-16297?
CVE-2026-16297 is a medium-severity unsafe deserialization vulnerability in Unknown Clearfy Cache, published on 3 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Clearfy Cache WordPress plugin before 2.4.3 does not restrict the classes allowed when unserializing settings-import data, allowing users with administrator access to perform PHP Object Injection attacks, which may lead to remote code execution when a suitable gadget chain is present in the environment.
Weakness: CWE-502
Which versions are affected by CVE-2026-16297?
How do I fix CVE-2026-16297?
No fix has been published for CVE-2026-16297 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-2026-16297 being exploited?
There is no known exploitation of CVE-2026-16297 in the wild and no public exploit code.
Sources
Also known as GHSA-5953-j744-chvm.