{"cve":"CVE-2013-5123","nvd":{"published":"2019-11-05T22:15:10.813","modified":"2026-06-16T23:58:22.860","status":"Modified","description":"The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9},"cwes":["CWE-287"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155248.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155291.html","http://www.openwall.com/lists/oss-security/2013/08/21/17","http://www.openwall.com/lists/oss-security/2013/08/21/18","http://www.securityfocus.com/bid/77520"],"products":["debian:debian_linux","fedoraproject:fedora","pypa:pip","redhat:openshift","redhat:software_collections","virtualenv:virtualenv"],"source":"nvd","synced_at":"2026-10-19T20:59:25.448946135+00:00"},"epss":{"cve":"CVE-2013-5123","score":0.07987,"percentile":0.94757,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c5h8-cq4v-cvfm","url":"https://osv.dev/vulnerability/GHSA-c5h8-cq4v-cvfm","summary":"Improper Authentication in pip","modified":"2024-10-14T22:00:55.355945Z","packages":[{"ecosystem":"PyPI","name":"pip","purl":"pkg:pypi/pip","ranges":["<1.5"],"fixed":["1.5"]}]},{"id":"PYSEC-2019-160","url":"https://osv.dev/vulnerability/PYSEC-2019-160","summary":"","modified":"2023-11-08T03:57:25.017822Z","packages":[{"ecosystem":"PyPI","name":"pip","purl":"pkg:pypi/pip","ranges":["<1.5"],"fixed":["1.5"]}]}],"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."]}