CVE-2025-51605 in Shopizer
Summary
by MITRE • 08/22/2025
An issue was discovered in Shopizer 3.2.7. The server's CORS implementation reflects the client-supplied Origin header verbatim into Access-Control-Allow-Origin without any whitelist validation, while also enabling Access-Control-Allow-Credentials: true. This allows any malicious origin to make authenticated cross-origin requests and read sensitive responses.
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Analysis
by VulDB Data Team • 09/13/2025
The vulnerability identified as CVE-2025-51605 represents a critical misconfiguration in the Shopizer e-commerce platform version 3.2.7 that fundamentally undermines cross-origin resource sharing security controls. This flaw exists within the server's CORS policy implementation where the system naively reflects the client-supplied Origin header directly into the Access-Control-Allow-Origin response header without any validation or sanitization processes. The vulnerability is particularly dangerous because it operates in conjunction with the Access-Control-Allow-Credentials: true setting, which enables the browser to include credentials such as cookies, authorization headers, or TLS client certificates in cross-origin requests. This combination creates a pathway for malicious actors to exploit the system's trust in the origin header and execute unauthorized authenticated requests from compromised domains. The flaw directly maps to CWE-693, which describes protection mechanism failures in web applications, specifically concerning the improper handling of cross-origin requests. From an operational perspective, this vulnerability allows attackers to bypass the same-origin policy that browsers enforce to prevent malicious websites from making unauthorized requests to a target domain. The impact extends beyond simple data theft as it enables session hijacking, privilege escalation, and unauthorized transactions within the authenticated context of the Shopizer application. Attackers could potentially construct malicious web pages that automatically submit requests to the vulnerable Shopizer instance, leveraging the legitimate user's authenticated session to perform actions they would not normally be authorized to execute.
The security implications of this vulnerability are severe and align with techniques described in the MITRE ATT&CK framework under the T1566.001 tactic for initial access through spearphishing attachments, where a malicious origin could be used to deliver cross-site scripting payloads that exploit this CORS misconfiguration. The flaw essentially creates a trust boundary violation where the server trusts the client-provided origin header without proper validation, making it susceptible to attacks such as cross-site request forgery and credential theft. Organizations using Shopizer 3.2.7 are particularly at risk as the vulnerability affects the core authentication and authorization mechanisms of the platform. The vulnerability is exacerbated by the fact that modern browsers will not process credentials in cross-origin requests when the Access-Control-Allow-Origin header contains a wildcard or when the origin header is not properly validated, but in this case, the server's behavior creates an exception that allows any origin to access authenticated resources. This misconfiguration effectively removes the CORS security model's protections and transforms the application into a potential vector for data exfiltration and unauthorized access to sensitive user information. The vulnerability is particularly concerning for e-commerce platforms where user sessions contain sensitive payment information and personal data that could be compromised through such attacks.
Mitigation strategies for CVE-2025-51605 should focus on implementing proper CORS validation mechanisms that enforce a strict whitelist of allowed origins rather than reflecting client-supplied headers. Organizations should configure their Shopizer instances to validate the Origin header against a predefined list of trusted domains and reject requests from untrusted origins. The implementation should include proper input sanitization and validation to prevent header injection attacks that could further exploit the vulnerability. Security patches or updates should be applied immediately to address this configuration issue, and organizations should review their CORS policies to ensure that Access-Control-Allow-Credentials is only set to true when absolutely necessary and when proper origin validation is in place. Additionally, network-level protections such as web application firewalls can help detect and block malicious requests that attempt to exploit this vulnerability by monitoring for suspicious Origin header values. The mitigation approach should align with security best practices outlined in OWASP's CORS security guidelines and should include monitoring for unauthorized cross-origin requests that could indicate exploitation attempts. Regular security assessments should verify that CORS configurations are properly implemented and that no other similar vulnerabilities exist within the application's security architecture. Organizations should also consider implementing additional security controls such as CSRF tokens and proper session management to further protect against unauthorized access that could result from this CORS misconfiguration.