CVE-2026-68771

ComfyUI v0.23.0 contains an unsafe deserialization vulnerability in the LoadTrainingDataset node that allows unauthenticated remote attackers to execute arbitrary Python code by uploading a crafted pickle file and triggering its deserialization. Attackers can upload a malicious shard_*.pkl file via the unauthenticated POST /upload/image endpoint and then queue a workflow graph via POST /prompt referencing the uploaded file, causing torch.load to deserialize the attacker-controlled pickle payload using __reduce__ and execute arbitrary commands as the ComfyUI process user.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/Comfy-Org/ComfyUI
https://github.com/Comfy-Org/ComfyUI/commit/94ee49b1612824366a8631ea069b2a1fa5c73720
https://github.com/Comfy-Org/ComfyUI/pull/14543
https://www.vulncheck.com/advisories/comfyui-unauthenticated-rce-via-loadtrainingdataset-pickle-deserialization

Configurations

No configuration.

History

31 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-31 22:17

Updated : 2026-08-03 18:16

NVD link : CVE-2026-68771

Mitre link : CVE-2026-68771

CVE.ORG link : CVE-2026-68771

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

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