{"cve":"CVE-2019-18874","nvd":{"published":"2019-11-12T02:15:10.343","modified":"2026-06-17T02:25:30.920","status":"Modified","description":"psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount mishandling within a while or for loop that converts system data into a Python object.","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":["CWE-415"],"references":["https://github.com/giampaolo/psutil/pull/1616","https://lists.debian.org/debian-lts-announce/2019/11/msg00018.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P7QI7MOTZTFXQYU23CP3RAWXCERMOAS/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OLETTJYZL2SMBUI4Q2NGBMGPDPP54SRG/","https://usn.ubuntu.com/4204-1/"],"products":["psutil_project:psutil"],"source":"nvd","synced_at":"2026-10-19T20:59:25.448946135+00:00"},"epss":{"cve":"CVE-2019-18874","score":0.03522,"percentile":0.89232,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qfc5-mcwq-26q8","url":"https://osv.dev/vulnerability/GHSA-qfc5-mcwq-26q8","summary":"Double Free in psutil","modified":"2024-10-21T21:25:46.489783Z","packages":[{"ecosystem":"PyPI","name":"psutil","purl":"pkg:pypi/psutil","ranges":["<5.6.6"],"fixed":["5.6.6"]}]},{"id":"PYSEC-2019-41","url":"https://osv.dev/vulnerability/PYSEC-2019-41","summary":"","modified":"2023-11-08T04:01:26.639734Z","packages":[{"ecosystem":"PyPI","name":"psutil","purl":"pkg:pypi/psutil","ranges":["<5.6.6"],"fixed":["5.6.6"]}]}],"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."]}