Medium

Accelerate path traversal and denial of service via sharded checkpoint weight_map entries

  • Disclosed: 10.08.2026
  • Updated: 11.10.2026 15:18

Hugging Face Accelerate through 1.14.0 contains a path traversal vulnerability in load_checkpoint_in_model and load_checkpoint_and_dispatch functions that fail to sanitize weight_map entries from sharded checkpoint indexes. Attackers can supply relative paths with ../ sequences or absolute paths to read arbitrary files, or point shard entries at named pipes to cause indefinite blocking and denial of service.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) accelerate <= 1.14.0 no fix

References

CVSS score 7.1/10
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness (CWE)
CWE-22
Platform
Python (PyPI)
Package
accelerate
Disclosed
10.08.2026
Updated
11.10.2026 15:18

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-3804 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-4j2p-28q2-5m79 - CC BY 4.0

Vulnerability history: accelerate

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

This is the only known vulnerability of this package.

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