GHSA-63cw-57p8-fm3p

Source

https://github.com/advisories/GHSA-63cw-57p8-fm3p

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-63cw-57p8-fm3p/GHSA-63cw-57p8-fm3p.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-63cw-57p8-fm3p

Aliases

Published

2026-01-27T20:10:54Z

Modified

2026-02-03T03:04:39.703226Z

Severity

8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator

Summary

PyTorch Vulnerable to Remote Code Execution via Untrusted Checkpoint Files

Details

Summary

A vulnerability in PyTorch's weights_only unpickler allows an attacker to craft a malicious checkpoint file (.pth) that, when loaded with torch.load(..., weights_only=True), can corrupt memory and potentially lead to arbitrary code execution.

Vulnerability Details

The weights_only=True unpickler failed to properly validate pickle opcodes and storage metadata, allowing:

Heap memory corruption via SETITEM/SETITEMS opcodes applied to non-dictionary types
Storage size mismatch between declared element count and actual data in the archive

Impact

An attacker who can convince a user to load a malicious checkpoint file may achieve arbitrary code execution in the context of the victim's process.

Credit

Ji'an Zhou

Database specific

{
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-502",
        "CWE-94"
    ],
    "nvd_published_at": "2026-01-27T22:15:56Z",
    "github_reviewed_at": "2026-01-27T20:10:54Z",
    "severity": "HIGH"
}

References

Affected packages

PyPI / pytorch

Package

Name: pytorch; View open source insights on deps.dev
Purl: pkg:pypi/pytorch

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.10.0

Affected versions

0.*

0.1.2

1.*

1.0.2

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-63cw-57p8-fm3p/GHSA-63cw-57p8-fm3p.json"