What is CVE-2026-44484?

CVE-2026-44484 is a critical-severity vulnerability in Lightning-ai Pytorch-lightning, classified under CWE-506. CVSS score: 9.8/10. Published 2026-05-14.

How severe is CVE-2026-44484?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Lightning-ai Pytorch-lightning

CVE-2026-44484

PyTorch Lightning is a deep learning framework to pretrain and finetune AI models. Versions 2.6.2 and 2.6.2 have introduced functionality consistent with a credential harvesting mechanism.

EPSS: 0.001 (19.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Lightning-ai Pytorch-lightning — versions 2.6.2, 2.6.3
Lightningai Pytorch_lightning — versions 2.6.2, 2.6.3

Weakness classification (CWE)

CWE-506

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44484?: CVE-2026-44484 is a critical-severity vulnerability in Lightning-ai Pytorch-lightning, classified under CWE-506. CVSS score: 9.8/10. Published 2026-05-14.
How severe is CVE-2026-44484?: Critical severity. CVSS v3 base score is 9.8 out of 10.