Description
Diffusers is the a library for pretrained diffusion models. Prior to 0.38.0, Diffusers' DiffusionPipeline.from_pretrained flow can bypass the trust_remote_code guard because download() validates model_index.json and custom pipeline code before later loading from a cached folder that can change, allowing a Hub repository with custom .py pipeline code to execute through the custom pipeline flow without passing custom_pipeline or trust_remote_code=True. This issue is fixed in version 0.38.0.
Affected products
huggingface: diffusers
References7
- github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-… Vendor AdvisoryExploit
- github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-… Vendor AdvisoryExploit
- github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3… Patch
- github.com/huggingface/diffusers/issues/13446 Issue TrackingExploit
- github.com/huggingface/diffusers/issues/13446 Issue TrackingExploit
- github.com/huggingface/diffusers/pull/13448 Issue Tracking
- github.com/huggingface/diffusers/releases/tag/v0.38.0 Release Notes
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 15 November 2026
- CWE
- CWE-367
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