CVE-2026-82925
Deferred Deferred - Pending Action

Unauthenticated PHP Object Injection in Site Reviews WordPress Plugin

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: WPScan

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.

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Meta Information

Published
2026-09-10
Last Modified
2026-09-10
Generated
2026-09-30
AI Q&A
2026-09-10
EPSS Evaluated
2026-09-29
NVD
CVE-2026-82925
EUVD
EUVD-2026-75267

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wpbray site_reviews to 8.3.0 (exc)
wpbray site_reviews From 7.2.2 (inc) to 8.3.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

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Executive Summary

The Site Reviews WordPress plugin before version 8.3.0 has a vulnerability where it does not properly prevent request data from being deserialized. The plugin uses a key derived from the WordPress nonce key to protect this data, but if the nonce key is weak, default, or too short, the key becomes publicly computable. This allows unauthenticated users to inject arbitrary PHP objects into the site.

Detection Guidance

Check the installed version of the Site Reviews WordPress plugin. If it is between 7.2.2 and 8.2.2, the system is vulnerable. Use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files for version details in wp-content/plugins/site-reviews/

Review server logs for unusual deserialization attempts or PHP object injection patterns, such as unexpected POST requests containing serialized data.

Impact Analysis

This vulnerability allows unauthenticated attackers to inject arbitrary PHP objects into your WordPress site. The impact depends on other plugins or themes installed, as the injected object may interact with them. Attackers could potentially execute malicious code or take control of your site if other vulnerable components are present.

Compliance Impact

This vulnerability could potentially affect compliance with GDPR and HIPAA by enabling unauthorized code execution if exploited. Unauthenticated PHP object injection may allow attackers to manipulate site data or execute malicious code, which could lead to data breaches or unauthorized access to sensitive information. Compliance may be impacted if such incidents occur, as they could violate data protection requirements under GDPR or HIPAA.

Mitigation Strategies

Update the Site Reviews plugin to version 8.3.0 or later immediately to patch the vulnerability.

If updating is not possible, disable the Site Reviews plugin temporarily until an update can be applied.

Review and rotate the WordPress nonce key to a strong, unique value to prevent key prediction attacks.

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