{"cve":"CVE-2019-11324","nvd":{"published":"2019-04-18T21:29:00.883","modified":"2026-06-17T02:12:42.910","status":"Modified","description":"The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates, which results in SSL connections succeeding in situations where a verification failure is the correct outcome. This is related to use of the ssl_context, ca_certs, or ca_certs_dir argument.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-295"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html","http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.html","http://www.openwall.com/lists/oss-security/2019/04/19/1","https://access.redhat.com/errata/RHSA-2019:3335","https://access.redhat.com/errata/RHSA-2019:3590"],"products":["canonical:ubuntu_linux","python:urllib3"],"source":"nvd","synced_at":"2026-10-19T20:56:19.218283075+00:00"},"epss":{"cve":"CVE-2019-11324","score":0.02915,"percentile":0.87011,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mh33-7rrq-662w","url":"https://osv.dev/vulnerability/GHSA-mh33-7rrq-662w","summary":"Improper Certificate Validation in urllib3","modified":"2024-11-18T22:25:21.266722Z","packages":[{"ecosystem":"PyPI","name":"urllib3","purl":"pkg:pypi/urllib3","ranges":["<1.24.2"],"fixed":["1.24.2"]}]},{"id":"PYSEC-2019-133","url":"https://osv.dev/vulnerability/PYSEC-2019-133","summary":"","modified":"2023-11-08T04:01:00.967964Z","packages":[{"ecosystem":"PyPI","name":"urllib3","purl":"pkg:pypi/urllib3","ranges":["<1.24.2"],"fixed":["1.24.2"]}]}],"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."]}