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.
CVE-2026-45804
HIGHPre-NVD 7.57.5—Trending — 3 sources updated this weekElevated
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 81% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 50(Track*)EG Risk 50/100SSVC: Track*
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Watch closely — could escalate to Attend. - EPSS
- 18.7%
- KEV
- Not listed
Published
May 20, 2026
Last Modified
July 15, 2026
Advisory Details (5)
Auto-updated Jul 15, 2026🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available
Diffusers 0.38.0: New image and audio pipelines, Core library improvements, and more
Patch available: huggingface/diffusers v0.38.0
https://github.com/huggingface/diffusers/releases/tag/v0.38.0github_commit
commit a37f6f8394ac (huggingface/diffusers)
Fix landed in huggingface/diffusers commit a37f6f8394ac — awaiting tagged release
https://github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3abea811efe54512b1github_pr
Improve `trust_remote_code`
Fix merged in huggingface/diffusers PR #13448 on 2026-04-23 — awaiting tagged release
https://github.com/huggingface/diffusers/pull/13448generic
Insufficient trust check for custom_pipeline parameter of DiffusionPipeline.from_pretrained method · Issue #13446 · huggingface/diffusers · GitHub
https://github.com/huggingface/diffusers/issues/13446github Patch Available🟡 PoC Available
TOCTOU Trust Remote Code Bypass · Advisory · huggingface/diffusers · GitHub
https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64pVendor Advisories for CVE-2026-45804(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| diffusers | 0.0.1 ... 0.9.0 (96 versions) | 0.38.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 03:16 UTCEG score recompute
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-19 02:29 UTCEPSS rescore
- 2026-07-18 10:04 UTCEPSS rescore
- 2026-07-17 22:59 UTCOSV refresh
- 2026-07-16 17:03 UTCEPSS rescore
- 2026-06-14 23:18 UTCEPSS rescore
- 2026-06-13 23:00 UTCEPSS rescore
- 2026-06-12 23:12 UTCEPSS rescore
- 2026-05-24 06:12 UTCEG score recompute
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-45804?
CVE-2026-45804 is a high vulnerability published on May 20, 2026. Diffusers is the a library for pretrained diffusion models. Prior to 0.38.0, Diffusers' DiffusionPipeline.frompretrained flow can bypass the trustremotecode guard because download() validates modelindex.json and custom pipeline code before later loading from a cached folder that can change,…
When was CVE-2026-45804 disclosed?
CVE-2026-45804 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45804 actively exploited?
CVE-2026-45804 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45804?
CVE-2026-45804 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45804?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45804, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-45804
Is Your Infrastructure Affected by CVE-2026-45804?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.