VulnerabilityModified

CVE-2026-44484

PyTorch Lightning is a deep learning framework to pretrain and finetune AI models.

CRITICAL 9.3EPSS 0.39%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 4.0: 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.39% probability · 33th percentile
CISA KEV: Not listed
Weakness: CWE-506, CWE-829
Affected: lightningai/pytorch lightning
Source: security-advisories@github.com

References

https://github.com/Lightning-AI/pytorch-lightning/security/advisories/GHSA-w37p-236h-pfx3Mitigation, Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-44484
https://bugzilla.redhat.com/show_bug.cgi?id=2477476
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44484.json

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.