CVE-2026-44513
8.8 HIGHDiffusers is the a library for pretrained diffusion models
Published: 2026-05-14 · Last updated: 2026-05-19
Severity and scoring
- CVSS
- 8.8 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CWE
- CWE-94
Affected products
| Vendor | Product |
|---|---|
| huggingface | diffusers |
Description
Diffusers is the a library for pretrained diffusion models. Prior to 0.38.0, a trust_remote_code bypass in DiffusionPipeline.from_pretrained allows arbitrary remote code execution despite the user passing trust_remote_code=False (or omitting it, which is the default). The vulnerability has three variants, all sharing the same root cause — the trust_remote_code gate was implemented inside DiffusionPipeline.download() rather than at the actual dynamic-module load site, so any code path that bypassed or short-circuited download() also bypassed the security check. DiffusionPipeline.from_pretrained('repoA', custom_pipeline='attacker/repoB', trust_remote_code=False) — the gate evaluated against repoA's file list rather than repoB's, so repoB's pipeline.py was loaded and executed. DiffusionPipeline.from_pretrained('/local/snapshot', custom_pipeline='attacker/repoB', trust_remote_code=False) — the local-path branch never invoked download(), so the gate was never reached and remote code from repoB executed. DiffusionPipeline.from_pretrained('/local/snapshot', trust_remote_code=False) where the snapshot contains custom component files (e.g. unet/my_unet_model.py) referenced from model_index.json — same root cause; the local path skipped download() and custom component code executed. This vulnerability is fixed in 0.38.0.
Source: NVD
References
Related CVEs
Same vendor
- CVE-2026-5241 — A vulnerability in the LightGlue model loading path of huggingface/transformers version 5.2.0 allows an attacker-controlled model reposit... (9.6 CRITICAL)
- CVE-2026-4372 — A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0 (7.8 HIGH)
- CVE-2026-44827 — Diffusers is the a library for pretrained diffusion models (8.8 HIGH)
Same CWE
- CVE-2026-50223 — Improper Control of Generation of Code ('Code Injection') vulnerability in Apache OFBiz allows a low-privileged authenticated user with C...
- CVE-2026-45558 — Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers (9.9 CRITICAL)
- CVE-2026-46517 — LMDeploy is a toolkit for compressing, deploying, and serving large language models (7.8 HIGH)
- CVE-2026-46432 — LMDeploy is a toolkit for compressing, deploying, and serving large language models (7.8 HIGH)
- CVE-2026-47292 — Inclusion of functionality from untrusted control sphere in Visual Studio Code allows an unauthorized attacker to elevate privileges locally (7.8 HIGH)