CVE-2023-34917 in Fuge
Summary
by MITRE • 07/31/2023
Fuge CMS v1.0 contains an Open Redirect vulnerability in member/RegisterAct.java.
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Analysis
by VulDB Data Team • 06/14/2026
The vulnerability exists within Fuge CMS version 1.0 where the member registration activation process fails to properly validate redirect URLs, creating an open redirect vulnerability in the RegisterAct.java component. This flaw allows attackers to manipulate the redirection behavior during user registration by injecting malicious URLs into the redirect parameter. The technical implementation lacks input validation and sanitization mechanisms that would normally ensure redirect destinations originate from trusted sources within the application domain.
The operational impact of this vulnerability extends beyond simple redirection attacks, as it can be leveraged for phishing campaigns, credential theft, and social engineering attacks. An attacker could craft malicious links that appear to redirect users to legitimate registration confirmation pages while actually routing them to attacker-controlled domains. This vulnerability aligns with CWE-601 which specifically addresses open redirect vulnerabilities and represents a significant security risk for user authentication flows. The flaw particularly affects the application's trust model and can undermine user confidence in the system's security posture.
Security researchers have identified this as a critical issue in web application security frameworks, as open redirect vulnerabilities provide attackers with a vector for user deception and data exfiltration. The vulnerability can be exploited through various attack vectors including email phishing, malicious advertisements, or compromised websites that redirect users to malicious endpoints. According to ATT&CK framework, this vulnerability maps to T1566 which covers social engineering techniques using open redirect vulnerabilities. The exploitation typically requires minimal technical skill and can be automated, making it particularly dangerous for widespread deployment.
Mitigation strategies should include implementing strict URL validation that only permits redirection to internal application paths, employing a whitelist approach for redirect destinations, and ensuring all redirect parameters undergo comprehensive sanitization. Organizations should implement proper input validation controls that verify redirect URLs against a predefined list of trusted domains. Additionally, security headers such as Content Security Policy should be enforced to prevent unauthorized redirection. The fix requires modifying the RegisterAct.java component to validate redirect URLs against a whitelist of approved domains and reject any external redirection attempts. Regular security testing and input validation reviews should be conducted to prevent similar issues in future releases.