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 4.0

9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-25)

CWE

CWE-502

Published

2026-07-31

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

References

• 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

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