{"cve":"CVE-2026-4538","nvd":{"published":"2026-03-22T05:16:20.273","modified":"2026-06-17T10:56:46.560","status":"Analyzed","description":"A vulnerability was identified in PyTorch 2.10.0. The affected element is an unknown function of the component pt2 Loading Handler. The manipulation leads to deserialization. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The project was informed of the problem early through a pull request but has not reacted yet.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","score":1.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-20","CWE-502"],"references":["https://github.com/pytorch/pytorch/","https://github.com/pytorch/pytorch/pull/176791","https://vuldb.com/?ctiid.352326","https://vuldb.com/?id.352326","https://vuldb.com/?submit.774681"],"products":["linuxfoundation:pytorch"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-4538","score":0.00243,"percentile":0.15564,"date":"2026-10-31"},"kev":null,"osv":[{"id":"PYSEC-2026-139","url":"https://osv.dev/vulnerability/PYSEC-2026-139","summary":"","modified":"2026-05-21T15:00:31.962442644Z","packages":[{"ecosystem":"PyPI","name":"torch","purl":"pkg:pypi/torch","ranges":["<=2.10.0"],"fixed":[]}]}],"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."]}