CVE-2026-65920

Diffusers through 0.39.0, fixed in commit cee298c, contains a path traversal vulnerability in the getcheckpointshardfiles function that allows attackers to read arbitrary files by supplying malicious weightmap values in model index JSON. Attackers can use ../ sequences or absolute paths in...

CVE-2026-44827

A flaw was found in Diffusers, a library for pretrained diffusion models. A remote attacker could exploit this vulnerability by publishing a malicious model repository containing a specially crafted file. When a victim loads a pipeline from the Hugging Face Hub repository, the malicious file is...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview diffusers is a State-of-the-art diffusion in PyTorch and JAX. Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition in the frompretrained flow. An attacker can execute arbitrary code by exploiting a race condition between two repository fetch...

CVE-2026-44827 Diffusers: None.py Trust Remote Code Bypass

Diffusers is the a library for pretrained diffusion models. Prior to 0.38.0, diffusers 0.37.0 allows remote code execution without the trustremotecode=True safeguard when loading pipelines from Hugging Face Hub repositories. The resolvecustompipelineandcls function in pipelineloadingutils.py...

CVE-2026-44827

Diffusers prior to 0.38.0 is vulnerable to silent remote code execution when loading pipelines from Hugging Face Hub without trust_remote_code. If custom_pipeline is not supplied, _resolve_custom_pipeline_and_cls formats None as None.py; a repository containing a None.py with a subclass of Diffus...

Arbitrary Code Injection

Overview diffusers is a State-of-the-art diffusion in PyTorch and JAX. Affected versions of this package are vulnerable to Arbitrary Code Injection in the frompretrained fucntion when a repository contains a None.py file and the custompipeline argument is not supplied. An attacker can execute...