CVE-2026-44513: huggingface diffusers · Code Injection
Affects huggingface diffusersSource CVE Database V5
Not known to be exploited · CVSS 8.8 High : upgrade to 0.38.0 soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 64% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.38.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 14 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade huggingface diffusers to 0.38.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| huggingfacediffusers | Affected
| Fixed in
|
PyPIdiffuserspkg:pypi/diffusersOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
This vulnerability is fixed in diffusers version 0.38.0. Users should upgrade to version 0.38.0 or later to remediate this issue. Patch status is confirmed by the vendor advisory. No other mitigations are indicated.
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.
References
- github.com/huggingface/diffusers/security/advisories/GHSA-98h9-4798-4q5v (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-44513 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2477507 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44513.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:60520 (opens in a new tab)