Diffusers vulnerabilities

A path traversal vulnerability was found in Diffusers up to version 0.39.0 in the _get_checkpoint_shard_files function. Attackers can supply malicious weight_map values in model index JSON, containing ../ sequences or absolute paths, allowing reading of safetensors files outside the intended directory.

A vulnerability in the Diffusers library before version 0.38.0 allows bypassing the trust_remote_code guard. The download() method validates model_index.json and custom pipeline code but later loads from a cached folder that can change, enabling execution of malicious .py code from a Hub repository without requiring trust_remote_code=True.

The Diffusers library before version 0.38.0 contains a vulnerability that bypasses the trust_remote_code protection. An attacker can execute arbitrary remote code even when trust_remote_code is set to False or omitted. The issue stems from a flawed implementation of the security check in the download() function, which can be bypassed through alternative code paths.