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Vulnerability record · CVE-2026-4538 · published 22 March 2026

CVE-2026-4538: Linuxfoundation pytorch improper input validation vulnerability

Linuxfoundation · Pytorch

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.

1.9 CVSS 4.0 Low EPSS 0.40% · top 68.9% CWE-20 · Improper input validationCWE-502 · Deserialization of untrusted data
1.9CVSS 4.0 base score, v2 4.3
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/pytorch/pytorch/ Product
https://github.com/pytorch/pytorch/pull/176791 Issue TrackingPatch
https://vuldb.com/?ctiid.352326 Permissions RequiredVDB Entry
https://vuldb.com/?id.352326 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.774681 Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-4538), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.