CVE-2026-68771criticalCWE-502

CVE-2026-68771: critical vulnerability in Comfy-Org ComfyUI

ComfyUI 0.23.0 Unauthenticated RCE via LoadTrainingDataset Pickle Deserialization

Published · Updated

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48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.3epss 1.1%
from disclosure to weapon3 days
Published on NVDJul 31
1st PoC+3d
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/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Comfy-Org · ComfyUI
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Comfy-Org ComfyUI

In the same product, most dangerous first.

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