CVE-2026-58659: PyTorch Lightning Arbitrary Code Execution via _instantiator Hyperparameter
Lightning-AI · pytorch-lightning
Vendor fix available · Affected: Lightning-AI pytorch-lightning · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 50% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Lightning-AI · pytorch-lightningup to and including 2.6.5
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Lightning-AI
- Published
- July 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-58659 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.