CVE-2026-44827Public exploitNetwork attack vector

Remote code execution via None.py interpolation

Published May 14, 2026 · Updated May 14, 2026

Code injection in Hugging Face Diffusers 0.37.0 allows remote attackers to execute code when a user loads a malicious Hub pipeline. _resolve_custom_pipeline_and_cls formats an omitted custom_pipeline value as None.py, downloads that file, and dynamically imports it after the trust_remote_code check skips the absent argument. Exploitation requires a user to call DiffusionPipeline.from_pretrained() on the attacker's repository; the imported code runs with the user's process privileges.

CVSS severity8.8
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Hugging Face Diffusers 0.37.0 allows remote attackers to execute code when a user loads a malicious Hub pipeline. _resolve_custom_pipeline_and_cls formats an omitted custom_pipeline value as None.py, downloads that file, and dynamically imports it after the trust_remote_code check skips the absent argument. Exploitation requires a user to call DiffusionPipeline.from_pretrained() on the attacker's repository; the imported code runs with the user's process privileges.

The record

CVE
CVE-2026-44827
Published
May 14, 2026
Updated
May 14, 2026
Vendor
Hugging Face
Product
Diffusers
Classifications
CWE-94, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2026CVE publishedPublication date reported by the CVE source.
  2. May 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.38.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hugging Face · Diffusersversion=< 0.38.0

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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