CVE-2025-67303 identifies a security vulnerability in ComfyUI-Manager, a software application used for managing user interfaces, prior to version 3.38. The core issue stems from the application's practice of storing configuration files and other critical data in locations that are insufficiently protected and accessible through its web interface. This misconfiguration allows remote attackers to access, manipulate, or potentially corrupt these files without requiring authentication or user interaction. The vulnerability results from inadequate access controls and improper file storage permissions, which expose sensitive data to unauthorized parties. Although no exploits have been observed in the wild to date, the vulnerability's nature suggests that an attacker could leverage it to alter system configurations, disrupt normal operations, or exfiltrate sensitive information. The absence of a CVSS score indicates that the vulnerability is newly published, but the risk is significant due to the potential for remote exploitation and the criticality of the data involved. The vulnerability affects all versions of ComfyUI-Manager prior to 3.38, emphasizing the importance of applying updates promptly. The lack of patch links suggests that users should consult official vendor channels for remediation guidance. Overall, this vulnerability highlights the risks associated with improper file storage and access control in web-facing management interfaces.

For European organizations, exploitation of CVE-2025-67303 could lead to unauthorized modification or disclosure of configuration data, undermining system integrity and confidentiality. This may result in operational disruptions, data breaches, or further compromise of internal systems if attackers manipulate critical settings. Organizations relying on ComfyUI-Manager for managing user interfaces in sensitive environments—such as government agencies, financial institutions, healthcare providers, and critical infrastructure operators—face heightened risks. The vulnerability could facilitate lateral movement within networks or enable attackers to establish persistent footholds. Given the remote exploitation capability without authentication, the threat surface is broad, potentially affecting any exposed ComfyUI-Manager instances. The absence of known exploits currently limits immediate impact, but the vulnerability's publication may prompt attackers to develop exploits, increasing future risk. European organizations must prioritize detection and remediation to prevent exploitation, especially those with public-facing management interfaces.

1. Upgrade ComfyUI-Manager to version 3.38 or later immediately once available, as this version addresses the vulnerability by securing file storage locations. 2. Restrict access to the ComfyUI-Manager web interface using network segmentation, VPNs, or IP whitelisting to limit exposure to trusted users only. 3. Implement strict file system permissions on servers hosting ComfyUI-Manager to ensure configuration files are not accessible via the web server or unauthorized users. 4. Conduct regular audits of web interface access logs and file permissions to detect unauthorized access attempts or misconfigurations. 5. Employ web application firewalls (WAFs) to monitor and block suspicious requests targeting the management interface. 6. Educate system administrators about the risks of exposing management interfaces and enforce secure configuration management practices. 7. Monitor threat intelligence sources for any emerging exploits related to CVE-2025-67303 and apply patches or mitigations promptly. 8. Consider deploying intrusion detection/prevention systems (IDS/IPS) tuned to detect anomalous activity targeting ComfyUI-Manager.