CVE-2025-67303Known exploitationPublic exploitNetwork attack vector

Unauthenticated code execution via exposed manager configuration

Published Jan 5, 2026 · Updated Jan 5, 2026

Unprotected alternate channel in ComfyUI-Manager before 3.38 allows remote attackers to alter configuration through ComfyUI web APIs. The /userdata/ API exposes user/default/ComfyUI-Manager/config.ini without access control, allowing its security_level value to be rewritten. An externally reachable instance is required; after setting the level to weak and rebooting the service, an unauthenticated attacker can install a malicious custom node and execute code in the server process.

CVSS severity7.5
High
EPSS probability1.41%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unprotected alternate channel in ComfyUI-Manager before 3.38 allows remote attackers to alter configuration through ComfyUI web APIs. The /userdata/ API exposes user/default/ComfyUI-Manager/config.ini without access control, allowing its security_level value to be rewritten. An externally reachable instance is required; after setting the level to weak and rebooting the service, an unauthenticated attacker can install a malicious custom node and execute code in the server process.

The record

CVE
CVE-2025-67303
Published
Jan 5, 2026
Updated
Jan 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-420, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-420Unprotected Alternate Channel
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo