CVE-2026-66428 in WP Google Review Slider Plugin
Summary
by MITRE • 07/27/2026
Unauthenticated Cross Site Request Forgery (CSRF) in WP Google Review Slider <= 18.4 versions.
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Analysis
by VulDB Data Team • 07/27/2026
This vulnerability represents a critical security flaw in the WP Google Review Slider plugin for WordPress systems, affecting all versions up to and including 18.4. The issue stems from the absence of proper authentication checks within the plugin's administrative endpoints, allowing unauthenticated attackers to manipulate the plugin's functionality through crafted requests. The vulnerability manifests as a cross site request forgery condition where malicious actors can exploit the lack of anti-CSRF tokens or session validation mechanisms to execute unauthorized actions against vulnerable WordPress installations.
The technical implementation of this flaw involves the plugin's failure to validate user authentication status before processing administrative operations. When users access certain endpoints within the WP Google Review Slider plugin, the system does not verify whether the requesting user possesses valid administrative privileges or has been properly authenticated through the WordPress session management system. This absence of authentication checks creates a pathway for attackers to construct malicious requests that appear legitimate to the WordPress system, enabling them to perform operations such as modifying review settings, deleting content, or potentially escalating privileges within the affected environment.
The operational impact of this vulnerability extends beyond simple data manipulation, as it provides attackers with a potential foothold for further exploitation within WordPress environments. An attacker could leverage this vulnerability to inject malicious code through altered review configurations, modify existing reviews to spread misinformation, or even establish persistent access points within the compromised system. The unauthenticated nature of the attack means that no valid credentials are required to exploit the vulnerability, making it particularly dangerous as it can be exploited by anyone with access to the target website's URL.
This vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery conditions in software applications, and demonstrates weaknesses in authentication and session management practices. The ATT&CK framework categorizes this issue under T1078 Valid Accounts as the exploitation may lead to unauthorized access through legitimate administrative functions, while also potentially supporting lateral movement activities if the compromised plugin provides access to broader system functionalities. Organizations running affected versions should immediately implement mitigations including updating to patched versions of the plugin, implementing additional authentication layers, or applying custom code patches that enforce proper session validation before processing administrative requests.
The broader implications for WordPress security ecosystems highlight the critical importance of maintaining up-to-date plugins and implementing comprehensive security monitoring strategies. Given that many WordPress installations rely on third-party plugins for core functionality, vulnerabilities in these components can create cascading security risks throughout the entire application stack. Security teams should conduct immediate inventory assessments to identify all instances of the affected plugin and establish monitoring protocols to detect potential exploitation attempts through unusual administrative request patterns or unauthorized configuration changes within their WordPress environments.