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HIGH

CVE-2026-58659

CVSS v3

7.8

HIGH

EPSS Score

0.6 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • lightningPyPIall versions · fixed in 2.6.6and 1 other package

Vendor advisories

  • CVE-2026-58659 Red Hat Product Security34 products fixed · 2 known affected

    pytorch-lightning: PyTorch Lightning: Remote code execution via malicious checkpoint files

    rhaiis/vllm-cpu-rhel9 as a component of Red Hat AI Inference Server · rhaiis/vllm-tpu-rhel9 as a component of Red Hat AI Inference Server

  • RHSA-2026:84734 Red Hat Product Security8 products fixed

    Red Hat Security Advisory: RHOAI 3.4.5 - Red Hat OpenShift AI

  • RHSA-2026:82415 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cpu)

  • RHSA-2026:82368 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cuda)

  • RHSA-2026:76150 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: Red Hat Enterprise Linux AI 3.4.5 security update

  • RHSA-2026:76149 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Enterprise Linux AI 3.4.5 security update

8 more advisories

Full record on NVD

Description

PyTorch Lightning through 2.6.5, fixed in commit d710d68, contains a remote code execution vulnerability in the _load_state function that imports and executes attacker-controlled module names from checkpoint _instantiator hyperparameters. Attackers can craft malicious checkpoint files that bypass weights_only=True protections to execute arbitrary code when LightningModule.load_from_checkpoint is called.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2026-07-15
Last Modified
2026-07-15

Frequently asked questions

What is CVE-2026-58659?

PyTorch Lightning through 2.6.5, fixed in commit d710d68, contains a remote code execution vulnerability in the _load_state function that imports and executes attacker-controlled module names from checkpoint _instantiator hyperparameters. Attackers can craft malicious checkpoint files that bypass weights_only=True protections to execute arbitrary code when LightningModule.load_from_checkpoint is called.

Is CVE-2026-58659 actively exploited?

Active exploitation of CVE-2026-58659 has not been confirmed. Its EPSS score was 0.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-58659?

CVE-2026-58659 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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