ComfyUI-Manager has an Unprotected Alternate Channel (CWE-420)

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

• CVE-2025-67303: 1.39% estimated exploitation activity in the next 30 days; percentile 72.38 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact An Unprotected Alternate Channel (CWE-420) vulnerability was discovered in ComfyUI-Manager versions prior to 3.38. Vulnerability Details In affected versions, ComfyUI-Manager stored its configuration in the user/default/ComfyUI-Manager/ directory, which was accessible via ComfyUI's web APIs without proper access control. This unprotected alternate channel allowed remote attackers to read and manipulate configuration files and critical data through the web interface. Potential Attack Scenarios An attacker exploiting this vulnerability could: - Modify security settings: Lower the security level from "strong" to "weak" to enable more dangerous operations - Tamper with custom node sources: Add malicious custom node repositories - Manipulate snapshot data: Corrupt or alter system snapshots - Change manager behavior: Alter various manager configuration settings Affected Configurations | Configuration | Risk Level | |---------------|------------| | Systems running with --listen…

Published by the source

22 Jun 2026, 19:58 UTC

Last modified by the source

13 Jul 2026, 16:43 UTC

Source last checked

26 Oct 2026, 13:46 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-95pq-hr8p-f5g7

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-95pq-hr8p-f5g7

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# Patch Next advisory brief: CVE-2025-67303

Advisory: ComfyUI-Manager has an Unprotected Alternate Channel (CWE-420)
IDs: CVE-2025-67303, GHSA-95pq-hr8p-f5g7
Record: https://patchnext.com/advisories/cve-2025-67303 (revision 2, source checked 26 Oct 2026, 13:46 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: comfyui-manager 3.38. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI comfyui-manager: affected < 3.38; fixed in 3.38

## Suggested inspection (read-only)
- `python -m pip show comfyui-manager`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on comfyui-manager.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-95pq-hr8p-f5g7 (OSV record GHSA-95pq-hr8p-f5g7 lists affected ranges: PyPI comfyui-manager >=0 <3.38 (fixed))
- Verified: https://github.com/advisories/GHSA-95pq-hr8p-f5g7 (GitHub-reviewed advisory GHSA-95pq-hr8p-f5g7 lists affected ranges: PyPI comfyui-manager >=0 <3.38)

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