PT-2026-60248 · Lightning Ai · Pytorch-Lightning

George Chen · Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-58659

Mitre

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Exploit

Fix

Weakness Enumeration

CWE-470

Related Identifiers

CVE-2026-58659

Affected Products

Pytorch-Lightning

References · 5

• 🔥 https://github.com/Lightning-AI/pytorch-lightning/issues/21822 · Exploit
• https://github.com/Lightning-AI/pytorch-lightning/commit/d710d689510d50e800f53b3cd773cbca20b1f86f · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-58659 · Security Note
• https://github.com/Lightning-AI/pytorch-lightning/pull/21832 · Note
• https://vulncheck.com/advisories/pytorch-lightning-arbitrary-code-execution-via-instantiator-hyperparameter · Note