{"cve":"CVE-2021-4118","nvd":{"published":"2021-12-23T18:15:07.407","modified":"2026-06-17T04:19:03.817","status":"Modified","description":"pytorch-lightning is vulnerable to Deserialization of Untrusted Data","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-502"],"references":["https://github.com/pytorchlightning/pytorch-lightning/commit/62f1e82e032eb16565e676d39e0db0cac7e34ace","https://huntr.dev/bounties/31832f0c-e5bb-4552-a12c-542f81f111e6","https://github.com/pytorchlightning/pytorch-lightning/commit/62f1e82e032eb16565e676d39e0db0cac7e34ace","https://huntr.dev/bounties/31832f0c-e5bb-4552-a12c-542f81f111e6"],"products":["lightningai:pytorch_lightning"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-4118","score":0.01011,"percentile":0.63165,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-2vj5-px25-gjrp","url":"https://osv.dev/vulnerability/GHSA-2vj5-px25-gjrp","summary":"pytorch-lightning is vulnerable to Deserialization of Untrusted Data","modified":"2026-09-10T17:26:03.425101162Z","packages":[{"ecosystem":"PyPI","name":"pytorch-lightning","purl":"pkg:pypi/pytorch-lightning","ranges":["<1.6.0"],"fixed":["1.6.0"]}]},{"id":"PYSEC-2021-874","url":"https://osv.dev/vulnerability/PYSEC-2021-874","summary":"","modified":"2026-09-10T17:26:03.425101162Z","packages":[{"ecosystem":"PyPI","name":"pytorch-lightning","purl":"pkg:pypi/pytorch-lightning","ranges":["<1.6.0"],"fixed":["1.6.0"]}]},{"id":"PYSEC-2026-3968","url":"https://osv.dev/vulnerability/PYSEC-2026-3968","summary":"","modified":"2026-09-10T17:26:03.425101162Z","packages":[{"ecosystem":"PyPI","name":"lightning","purl":"pkg:pypi/lightning","ranges":["<1.6.0"],"fixed":["1.6.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}