Deserialization in Linuxfoundation Pytorch
CVE-2026-4538
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (15.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Linuxfoundation Pytorch — versions 2.10.0
- Pytorch — versions 2.10.0
Weakness classification (CWE)
References
- vuldb.com/ (VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/pytorch/pytorch/pull/176791 (issue-tracking, Patch, exploit, patch, Issue Tracking)
- github.com/pytorch/pytorch/ (Product, product)
Frequently asked questions
- What is CVE-2026-4538?
- CVE-2026-4538 is a medium-severity vulnerability in Linuxfoundation Pytorch, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-03-22.
- How severe is CVE-2026-4538?
- Medium severity. CVSS v3 base score is 5.3 out of 10.