{"action":"Upgrade lightning to 2.6.4 or later.","affected":[{"fixed":"2.6.4","introduced":"2.6.2"}],"component":"lightning","cve_ids":["CVE-2026-44484"],"ecosystem":"PyPI","epss":0.00671,"exploited":false,"fixed_versions":["2.6.4"],"ghsa_id":"GHSA-w37p-236h-pfx3","id":"tcs_01M5KH90TTATYS3YESSJNS31RW","modified_at":"2026-09-10T17:26:04.327761200Z","published_at":"2026-09-10T16:42:38.534688Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3973","https://github.com/Lightning-AI/pytorch-lightning/security/advisories/GHSA-w37p-236h-pfx3","https://nvd.nist.gov/vuln/detail/CVE-2026-44484","https://github.com/Lightning-AI/pytorch-lightning","https://pypi.org/project/pytorch-lightning","https://github.com/advisories/GHSA-w37p-236h-pfx3"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"PYSEC-2026-3973","url":"https://osv.dev/vulnerability/PYSEC-2026-3973"}],"summary":"Compromise of PyTorch Lightning PyPi Package Versions"}