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CVE-2026-58659

Lightningai Pytorch Lightning remote code execution

7.8 HIGHPublic exploitEPSS 0.63%
  1. Published15 Jul 2026

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Lightningai Pytorch Lightning≤ 2.6.5

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-58659 being actively exploited?

CVE-2026-58659 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.63%.

How severe is CVE-2026-58659?

CVE-2026-58659 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.63% probability of exploitation.

Which products are affected by CVE-2026-58659?

Affected products include Lightningai Pytorch Lightning.

How do I fix CVE-2026-58659?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.