CVE-2026-45804 HIGH

CVE-2026-45804: Diffusers: TOCTOU Trust Remote Code Bypass

Vendor Huggingface
Product diffusers
Weakness CWE-367
Published July 15, 2026
Last update July 15, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 15, 2026 CVE published
July 15, 2026 Record updated