CVE-2026-31221

high

Published 2026-05-12 · Modified 2026-05-18

CVSS v3

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2

—

VIR risk

7.8

Description

PyTorch Lightning load_from_checkpoint has an insecure checkpoint deserialization

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	pytorch-lightning	`<=2.6.0`
PIP	pytorch-lightning	`<= 2.6.0`

Application impact

Vendor	Product	Versions	Fixed
lightningai	pytorch_lightning	`{"endIncluding":"2.6.0"}`

References

CWEs

CWE-502

Verify integrity in audit chain (admin only). AS-IS.