CVE-2026-68771 ComfyUI 0.23.0 Unauthenticated RCE via LoadTrainingDataset Pickle Deserialization
Unauthenticated attackers can execute arbitrary code by uploading a malicious pickle file to the ComfyUI server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-68771?
CVE-2026-68771 is a critical unsafe deserialization vulnerability in Comfy-Org ComfyUI, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-502
Which versions are affected by CVE-2026-68771?
How do I fix CVE-2026-68771?
No fix has been published for CVE-2026-68771 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-68771 being exploited?
There is no known exploitation of CVE-2026-68771 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as GHSA-6p72-9j26-4rmx.