Site Reviews permits object injection when the nonce key is predictable
Site Reviews 7.2.2 through versions before 8.3.0 deserializes request data protected by a key derived from the WordPress nonce key. If that nonce key is absent, unchanged from its sample value, or too short to remain secret, an unauthenticated attacker can compute the protection key and inject PHP objects. Site Reviews itself provides no onward gadget chain; further impact depends on other code installed on the site.
- Component
- Site Reviews
- Plugin slug
site-reviews- Affected
- 7.2.2 to < 8.3.0
- Safe version
8.3.0- Published
- Sep 10, 2026
This CVE was published Sep 10, 2026 and is one of 16 known issues for this plugin.
Update, patch or deactivate.
Update Site Reviews to 8.3.0 or later. The authoritative export identifies this release as outside the affected range.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H