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CVE-2026-68771 is a critical unsafe deserialization vulnerability in ComfyUI v0.23.0 affecting the LoadTrainingDataset node, specifically the LoadTrainingDataset.execute code path in the dataset-loading component. The vulnerable logic loads attacker-controlled training shard pickle data using torch.load without the safer weights_only restriction, allowing Python pickle deserialization of untrusted content. An unauthenticated remote attacker can first upload a crafted training shard file through the application's unauthenticated upload functionality and then submit a workflow graph that causes the LoadTrainingDataset node to process that file. During deserialization, a malicious pickle payload can abuse Python's reduce mechanism to execute arbitrary Python code in the context of the ComfyUI process.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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