CVE-2025-41010 in Sintra
Summary
by MITRE • 10/02/2025
Incorrect Cross-Origin Resource Sharing (CORS) configuration in Hiberus Sintra. Cross-Origin Resource Sharing (CORS) allows browsers to make cross-domain requests in a controlled manner. This request has an “Origin” header that identifies the domain making the initial request and defines the protocol between a browser and a server to see if the request is allowed. An attacker can exploit this and potentially perform privileged actions and access confidential information when Access-Control-Allow-Credentials is enabled.
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Analysis
by VulDB Data Team • 10/02/2025
The vulnerability identified as CVE-2025-41010 represents a critical misconfiguration in the Cross-Origin Resource Sharing implementation within Hiberus Sintra software. This flaw stems from improper CORS policy configuration that fails to adequately validate origin domains, creating a pathway for malicious actors to bypass security restrictions designed to prevent unauthorized cross-domain requests. The vulnerability specifically manifests when the Access-Control-Allow-Credentials header is enabled, which indicates that the server accepts credentials such as cookies or authorization headers for cross-origin requests.
Cross-Origin Resource Sharing serves as a fundamental security mechanism in web applications, establishing a protocol between browsers and servers to determine whether cross-domain requests should be permitted. The mechanism relies on the Origin header sent by browsers to identify the requesting domain and compares it against server-side policies defined in CORS headers. When this validation process fails, attackers can exploit the misconfiguration to perform unauthorized actions on behalf of authenticated users, particularly when credentials are involved. The vulnerability becomes especially dangerous when combined with the Access-Control-Allow-Credentials flag, as this enables attackers to leverage authenticated sessions from legitimate users.
The operational impact of this vulnerability extends beyond simple data access, potentially allowing attackers to perform privileged actions within the affected system. When credentials are accepted in cross-origin requests, malicious actors can construct requests that appear to originate from legitimate domains while executing unauthorized operations. This creates opportunities for data exfiltration, privilege escalation, and session hijacking attacks. The vulnerability particularly affects applications where sensitive operations require authentication, as attackers can exploit the misconfigured CORS policy to perform actions that should only be available to authorized users. Attackers may leverage this weakness to access confidential information, modify data, or even gain administrative privileges within the affected system.
Mitigation strategies for CVE-2025-41010 require immediate attention to the CORS policy configuration within Hiberus Sintra applications. Organizations should implement strict origin validation by explicitly defining allowed origins rather than using wildcard configurations, particularly when Access-Control-Allow-Credentials is enabled. The implementation should follow the principle of least privilege, ensuring that only trusted domains are permitted to make cross-origin requests. Security teams should also consider implementing additional layers of protection such as Content Security Policy headers and proper session management controls. Regular security audits and automated scanning of CORS configurations should be conducted to prevent similar misconfigurations from occurring in other components of the application ecosystem. This vulnerability aligns with CWE-346, which addresses "Origin Validation Error", and maps to ATT&CK technique T1566.001 for credential harvesting through web application attacks, highlighting the critical nature of proper CORS implementation in maintaining web application security.