AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

PyTorchPYSEC-2026-139

PyTorch: unsafe deserialization

PyTorch

CVE-2026-4538 · Published Mar 22, 2026 · updated May 21, 2026

High7.8
No fix yet
Source advisory

A vulnerability was identified in PyTorch 2.10.0. The affected element is an unknown function of the component pt2 Loading Handler. The manipulation leads to deserialization. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The project was informed of the problem early through a pull request but has not reacted yet.

Affected versions

PackageAffectedFixed in
torch
PyPI
<= 2.10.0No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity from
the CVSS score
Also known as
BIT-pytorch-2026-4538, CVE-2026-4538

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