high7.8
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 …
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | lightning | < 2.6.6 | 2.6.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Lightningai | Pytorch Lightning | through 2.6.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-qqmf-gpg7-g8gw
- https://nvd.nist.gov/vuln/detail/CVE-2026-58659
- https://github.com/Lightning-AI/pytorch-lightning/issues/21822
- https://github.com/Lightning-AI/pytorch-lightning/pull/21832
- https://github.com/Lightning-AI/pytorch-lightning/commit/d710d689510d50e800f53b3cd773cbca20b1f86f
- https://www.vulncheck.com/advisories/pytorch-lightning-arbitrary-code-execution-via-instantiator-hyperparameter
- https://github.com/pypa/advisory-database/tree/main/vulns/lightning/PYSEC-2026-3624.yaml
- https://github.com/Lightning-AI/pytorch-lightning/releases/tag/2.6.6
- https://github.com/pypa/advisory-database/tree/main/vulns/pytorch-lightning/PYSEC-2026-3967.yaml