CVE-2026-22777

Workarounds

If upgrading is not possible:

• Run ComfyUI-Manager only on trusted networks
• Block external access via firewall
• Run on localhost only without the --listen option

References

• CWE-93: Improper Neutralization of CRLF Sequences
• OWASP CRLF Injection

Credit

This vulnerability was reported by:

• 李存义 [email protected]
• D0n9 Li [email protected]
• Swings [email protected]
• Osword from SGLAB of Legendsec at Qi'anxin Group [email protected]

Vulnerability Type: CRLF Injection via ConfigParser

An attacker can inject special characters into HTTP query parameters to add arbitrary configuration values to the config.ini file. This can lead to security setting tampering or modification of application behavior.

Affected Users: Users running ComfyUI-Manager in environments where ComfyUI is configured with the --listen option to allow remote access.

CVSS Score: 7.5 (High)

CVE-2026-22777 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.0.5, 3.39.2); upgrading removes the vulnerable code path.

Kodem intelligence

Fixed in the following versions:

• 3.39.2 (v3.x branch)
• 4.0.5 (v4.x branch)

Sanitization logic was added to the write_config() function to remove CRLF and NULL characters from all string values.

1. What is CVE-2026-22777? CVE-2026-22777 is a high-severity security vulnerability in comfy-cli (pip), affecting versions >= 4.0.0, <= 4.0.4. It is fixed in 4.0.5, 3.39.2.
2. How severe is CVE-2026-22777? CVE-2026-22777 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of comfy-cli are affected by CVE-2026-22777? comfy-cli (pip) versions >= 4.0.0, <= 4.0.4 is affected.
4. Is there a fix for CVE-2026-22777? Yes. CVE-2026-22777 is fixed in 4.0.5, 3.39.2. Upgrade to this version or later.
5. Is CVE-2026-22777 exploitable, and should I be worried? Whether CVE-2026-22777 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2026-22777 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2026-22777?
   • Upgrade comfy-cli to 4.0.5 or later
   • Upgrade comfy-cli to 3.39.2 or later