CVE-2026-82925 Site Reviews 7.2.2 - 8.2.2 - Unauthenticated PHP Object Injection via Form Signature
Unauthenticated attackers can inject PHP objects via form signatures on sites with weak nonce keys, potentially leading to code execution.
- 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-2026-82925?
CVE-2026-82925 is a high-severity unsafe deserialization vulnerability in Unknown Site Reviews, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Site Reviews WordPress plugin before 8.3.0 does not prevent request data from being deserialized, and derives the key protecting that data by padding out the site's WordPress nonce key, which makes the key publicly computable on installs where that key is absent, left at its sample value, or too short to be secret. This allows unauthenticated users to inject arbitrary PHP objects on such installs. The Site Reviews WordPress plugin before 8.3.0's own code contains no chain onward from the injected object, so how far it reaches depends on the other code present on the site.
Weakness: CWE-502
Which versions are affected by CVE-2026-82925?
How do I fix CVE-2026-82925?
No fix has been published for CVE-2026-82925 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-2026-82925 being exploited?
There is no known exploitation of CVE-2026-82925 in the wild and no public exploit code.
Sources
Also known as GHSA-3237-mv84-xmm9.