{"cve":"CVE-2020-28975","nvd":{"published":"2020-11-21T21:15:10.680","modified":"2026-06-17T03:10:56.217","status":"Modified","description":"svm_predict_values in svm.cpp in Libsvm v324, as used in scikit-learn 0.23.2 and other products, allows attackers to cause a denial of service (segmentation fault) via a crafted model SVM (introduced via pickle, json, or any other model permanence standard) with a large value in the _n_support array. NOTE: the scikit-learn vendor's position is that the behavior can only occur if the library's API is violated by an application that changes a private attribute.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["http://packetstormsecurity.com/files/160281/SciKit-Learn-0.23.2-Denial-Of-Service.html","http://seclists.org/fulldisclosure/2020/Nov/44","https://github.com/cjlin1/libsvm/blob/9a3a9708926dec87d382c43b203f2ca19c2d56a0/svm.cpp#L2501","https://github.com/scikit-learn/scikit-learn/commit/1bf13d567d3cd74854aa8343fd25b61dd768bb85","https://github.com/scikit-learn/scikit-learn/issues/18891"],"products":["scikit-learn:scikit-learn"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-28975","score":0.035,"percentile":0.89166,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jxfp-4rvq-9h9m","url":"https://osv.dev/vulnerability/GHSA-jxfp-4rvq-9h9m","summary":"scikit-learn Denial of Service","modified":"2024-12-03T06:16:59.181481Z","packages":[{"ecosystem":"PyPI","name":"scikit-learn","purl":"pkg:pypi/scikit-learn","ranges":[">=0.23.2 <1.0.1"],"fixed":["1.0.1"]}]},{"id":"PYSEC-2020-108","url":"https://osv.dev/vulnerability/PYSEC-2020-108","summary":"","modified":"2026-06-10T17:02:41.379397513Z","packages":[{"ecosystem":"PyPI","name":"scikit-learn","purl":"pkg:pypi/scikit-learn","ranges":["<0.24.dev0"],"fixed":["0.24.dev0"]}]}],"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."]}