PT-2026-66867 · Comfy Org · Comfyui

Bofei Chen · CVE-2026-68771 · Published 2026-07-31 · Updated 2026-07-31

Mitre

CVSS v3.1

9.8

Critical

Base vector

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

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.

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2026-68771

Affected Products

Comfyui

References · 5

• https://github.com/Comfy-Org/ComfyUI/commit/94ee49b1612824366a8631ea069b2a1fa5c73720 · Patch
• https://github.com/Comfy-Org/ComfyUI/pull/14543 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-68771 · Security Note
• https://github.com/Comfy-Org/ComfyUI · Note
• https://vulncheck.com/advisories/comfyui-unauthenticated-rce-via-loadtrainingdataset-pickle-deserialization · Note