CVE-2025-28933 in MaxAB Plugin
Summary
by MITRE • 03/12/2025
Cross-Site Request Forgery (CSRF) vulnerability in maxfoundry MaxA/B allows Stored XSS. This issue affects MaxA/B: from n/a through 2.2.2.
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Analysis
by VulDB Data Team • 03/12/2025
The vulnerability identified as CVE-2025-28933 represents a critical security flaw in the maxfoundry MaxA/B testing platform that combines cross-site request forgery with stored cross-site scripting capabilities. This vulnerability exists within the software version range from an unspecified initial version through 2.2.2, indicating a broad impact across multiple releases of the platform. The combination of CSRF and XSS vulnerabilities creates a particularly dangerous attack vector that can bypass traditional security controls and potentially compromise user sessions and data integrity.
The technical implementation of this vulnerability stems from inadequate validation and sanitization of user-supplied input within the MaxA/B platform's request handling mechanisms. When users interact with the platform, malicious actors can exploit the CSRF weakness to force authenticated users to execute unintended actions while simultaneously injecting malicious scripts that get stored within the application's database or storage systems. This stored XSS component allows the malicious code to persist and execute whenever affected users view the compromised content, creating a persistent threat that can affect multiple users over time.
From an operational perspective, this vulnerability poses significant risks to organizations using the MaxA/B platform for A/B testing and user experience optimization. The attack scenario typically involves an attacker crafting malicious requests that appear legitimate to the application's security mechanisms while exploiting the CSRF vulnerability to bypass authentication checks. Once the malicious payload is stored within the system, it can execute in the context of any user who views the affected content, potentially leading to session hijacking, data exfiltration, or further compromise of the affected environment. The vulnerability's persistence through stored XSS means that even if the initial attack vector is patched, the malicious content continues to pose threats to users.
The security implications extend beyond immediate user impact to encompass broader organizational risks including potential data breaches, compliance violations, and reputational damage. This vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery issues, while also incorporating elements of CWE-79 for cross-site scripting vulnerabilities. The attack pattern follows typical threat actor methodologies described in MITRE ATT&CK framework under techniques such as T1566 for credential access and T1059 for command and scripting interpreter usage, making it a multi-faceted threat requiring comprehensive defensive measures.
Organizations should immediately implement mitigations including proper input validation and output encoding mechanisms, implementation of anti-CSRF tokens for all state-changing operations, and regular security assessments of the platform's handling of user-generated content. The recommended approach includes deploying Content Security Policy headers to limit script execution, implementing proper session management controls, and ensuring all user inputs are properly sanitized before storage. Additionally, organizations should consider implementing web application firewalls and monitoring systems to detect anomalous patterns that might indicate exploitation attempts, while also establishing incident response procedures to address potential compromises. The vulnerability's scope across multiple versions indicates that organizations should prioritize upgrading to the latest stable release and conducting thorough security audits of their existing installations to identify and remediate similar issues throughout their application ecosystem.