Diffusers through 0.39.0, fixed in commit cee298c, contains a path traversal vulnerability in the _get_checkpoint_shard_files function that allows attackers to read arbitrary files by supplying malicious weight_map values in model index JSON. Attackers can use ../ sequences or absolute paths in weight_map entries to escape the model directory and read safetensors files outside the intended location during model loading.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
huggingface diffusers unaffected
Version Status Constraints
0 affected ≤ 0.39.0
cee298c1f37c439a9a408396b8283a921238a1c6 unaffected —

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Huggingface Subscribe
Diffusers Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/huggingface/diffusers/commit/cee298c1f37c439a9a408396b8283a921238a1c6 cve-icon
https://github.com/huggingface/diffusers/issues/14175 cve-icon
https://github.com/huggingface/diffusers/pull/14182 cve-icon
https://www.vulncheck.com/advisories/diffusers-path-traversal-via-weight-map-arbitrary-file-read cve-icon
History

Thu, 23 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Description Diffusers through 0.39.0, fixed in commit cee298c, contains a path traversal vulnerability in the _get_checkpoint_shard_files function that allows attackers to read arbitrary files by supplying malicious weight_map values in model index JSON. Attackers can use ../ sequences or absolute paths in weight_map entries to escape the model directory and read safetensors files outside the intended location during model loading.
Title Diffusers Path Traversal via weight_map Arbitrary File Read
First Time appeared Huggingface
Huggingface diffusers
Weaknesses CWE-22
CPEs cpe:2.3:a:huggingface:diffusers:*:*:*:*:*:python:*:*
Vendors & Products Huggingface
Huggingface diffusers
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-07-23T18:19:21.917Z

Reserved: 2026-07-23T12:51:09.596Z

Link: CVE-2026-65920

cve-icon Vulnrichment

Updated: 2026-07-23T18:19:18.348Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses