CVE-2025-14204 is an OS command injection vulnerability identified in TykoDev's cherry-studio-TykoFork software, version 0.1. The flaw resides in the redirectToAuthorization function of the OAuth Server Discovery component, specifically in the /.well-known/oauth-authorization-server endpoint. The vulnerability arises because the authorizationUrl parameter is improperly sanitized, allowing an attacker to inject and execute arbitrary operating system commands remotely. This injection occurs without requiring authentication or user interaction, increasing the risk of exploitation. The vulnerability was publicly disclosed on December 7, 2025, with a CVSS 4.0 score of 5.3, indicating a medium severity level. The attack vector is network-based with low attack complexity, no privileges required, and no user interaction needed. The impact on confidentiality, integrity, and availability is limited but present, as the attacker can execute OS commands that may lead to unauthorized data access or service disruption. No official patches have been released yet, and no known exploits are reported in the wild. The vulnerability affects only version 0.1 of the product, which may limit exposure depending on deployment scope. The OAuth Server Discovery component is critical for OAuth-based authentication flows, so exploitation could undermine authentication mechanisms and potentially lead to broader system compromise.

For European organizations, this vulnerability poses a moderate risk, particularly for those deploying TykoDev cherry-studio-TykoFork 0.1 in their OAuth infrastructure. Successful exploitation could allow attackers to execute arbitrary OS commands remotely, potentially leading to unauthorized access, data leakage, or disruption of authentication services. This could compromise sensitive user credentials or internal systems relying on OAuth for identity management. Given the widespread use of OAuth in enterprise environments across Europe, any disruption or compromise could have cascading effects on business operations and data privacy compliance, including GDPR obligations. However, the medium CVSS score and lack of known exploits in the wild suggest the immediate threat level is moderate. Organizations with exposed instances of the vulnerable component are at higher risk, especially if they have not implemented compensating controls such as network segmentation or input validation. The absence of authentication requirements for exploitation increases the attack surface, making internet-facing deployments particularly vulnerable.

To mitigate CVE-2025-14204, European organizations should prioritize the following actions: 1) Monitor TykoDev's official channels for security patches or updates addressing this vulnerability and apply them promptly once available. 2) If patches are not yet available, consider disabling or restricting access to the /.well-known/oauth-authorization-server endpoint or the OAuth Server Discovery component to prevent exploitation. 3) Implement strict input validation and sanitization on the authorizationUrl parameter to block malicious command injection payloads. 4) Employ network-level controls such as firewalls or web application firewalls (WAFs) to detect and block suspicious requests targeting the vulnerable endpoint. 5) Conduct thorough audits of OAuth implementations to identify and remediate insecure configurations. 6) Limit exposure by restricting access to the affected service to trusted internal networks where possible. 7) Enhance monitoring and logging to detect anomalous activities indicative of exploitation attempts. 8) Educate development and security teams about secure coding practices to prevent similar injection flaws in future software versions.