Game Review Block <= 4.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via className Parameter
Vulnerability Description
The Game Review Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in all versions up to, and including, 4.8.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Peter Thaleikis
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/88520d8e-8e13-4b58-9df3-3b99afd39144?source=cve
- https://plugins.trac.wordpress.org/browser/game-review-block/tags/4.7.0/src/game-table/callback.php#L38
- https://wordpress.org/plugins/game-review-block/#developers
- https://github.com/mtoensing/game-review-block/commit/135aa118b75db5242df7fd1ef13cc09ec3410f3a
Affected Vendor
marcdk
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