CVE-2026-45804
Diffusers: TOCTOU Trust Remote Code Bypass
- State
- Published
- Severity
- 7.5 High
- Published
- Jul 15, 2026
- Updated
- Jul 15, 2026
- Reserved
- May 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
Affected Products
| Product | Versions |
|---|---|
diffusershuggingface |
|
References
- https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64p
- https://github.com/huggingface/diffusers/issues/13446
- https://github.com/huggingface/diffusers/pull/13448
- https://github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3abea811efe54512b1
- https://github.com/huggingface/diffusers/releases/tag/v0.38.0
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.