CVE-2026-22777 is a vulnerability classified under CWE-93 (Improper Neutralization of CRLF Sequences) found in Comfy-Org's ComfyUI-Manager extension, which enhances ComfyUI usability. The flaw exists in versions prior to 3.39.2 and between 4.0.0 and 4.0.5, where an attacker can inject carriage return and line feed (CRLF) characters via HTTP query parameters. This injection allows arbitrary additions to the config.ini configuration file, enabling unauthorized modification of application settings or security parameters. The vulnerability does not require authentication or user interaction and can be exploited remotely over the network, making it highly accessible to attackers. The impact primarily affects the integrity of the application by allowing tampering with configuration, which could lead to altered application behavior or weakened security controls. The issue has been addressed in versions 3.39.2 and 4.0.5 by properly sanitizing input to prevent CRLF injection. Although no exploits have been reported in the wild, the vulnerability's nature and ease of exploitation make it a significant threat. Organizations relying on ComfyUI-Manager should assess their version deployments and apply patches promptly to mitigate risk.

For European organizations, this vulnerability poses a significant risk to the integrity of systems running ComfyUI-Manager, especially in environments where configuration integrity is critical. Unauthorized modification of config.ini could lead to weakened security settings, unauthorized access, or altered application behavior, potentially facilitating further attacks or data breaches. Sectors such as software development, digital content creation, and any industry leveraging ComfyUI for UI management may face operational disruptions or compliance issues if exploited. The network-exploitable nature means attackers can attempt exploitation remotely without credentials, increasing exposure. Although availability and confidentiality impacts are not directly indicated, the integrity compromise can cascade into broader security incidents. Organizations in Europe with automated or remote configuration management relying on ComfyUI-Manager are particularly vulnerable.

1. Immediately upgrade ComfyUI-Manager to version 3.39.2 or 4.0.5, where the vulnerability is patched. 2. Implement strict input validation and sanitization on all HTTP query parameters to prevent injection of CRLF or other special characters. 3. Employ file integrity monitoring on configuration files such as config.ini to detect unauthorized changes promptly. 4. Restrict network access to ComfyUI-Manager interfaces to trusted IP addresses or VPNs to reduce exposure. 5. Conduct regular security audits and penetration tests focusing on configuration management components. 6. Educate development and operations teams about the risks of injection vulnerabilities and secure coding practices. 7. Monitor logs for unusual or malformed HTTP requests that could indicate attempted exploitation. 8. Consider implementing application-layer firewalls or WAFs with rules to detect and block CRLF injection attempts targeting query parameters.