{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/5533?format=json","vulnerability_id":"VCID-z965-xgv5-fqet","summary":"Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the library with those configurations at risk of man-in-the-middle and information leakage attacks. This vulnerability affects users using versions 1.17 and 1.18 of the urllib3 library, who are using the optional PyOpenSSL support for TLS instead of the regular standard library TLS backend, and who are using OpenSSL 1.1.0 via PyOpenSSL. This is an extremely uncommon configuration, so the security impact of this vulnerability is low.","aliases":[{"alias":"CVE-2016-9015"},{"alias":"GHSA-v4w5-p2hg-8fh6"},{"alias":"PYSEC-2017-98"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/936869?format=json","purl":"pkg:deb/debian/python-urllib3@0?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/python-urllib3@0%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936866?format=json","purl":"pkg:deb/debian/python-urllib3@1.26.5-1~exp1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-p6x5-22nh-xbfa"},{"vulnerability":"VCID-zevs-1ge5-y7g7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/python-urllib3@1.26.5-1~exp1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936864?format=json","purl":"pkg:deb/debian/python-urllib3@1.26.12-1%2Bdeb12u1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-zevs-1ge5-y7g7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/python-urllib3@1.26.12-1%252Bdeb12u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936868?format=json","purl":"pkg:deb/debian/python-urllib3@2.3.0-3%2Bdeb13u1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-zevs-1ge5-y7g7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/python-urllib3@2.3.0-3%252Bdeb13u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936867?format=json","purl":"pkg:deb/debian/python-urllib3@2.6.3-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-p6x5-22nh-xbfa"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/python-urllib3@2.6.3-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/4554?format=json","purl":"pkg:pypi/urllib3@1.18.1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-4evk-srqq-fuef"},{"vulnerability":"VCID-5tkp-pxz9-h7c2"},{"vulnerability":"VCID-692s-9j5p-gbf1"},{"vulnerability":"VCID-6kxp-qa5x-q3bq"},{"vulnerability":"VCID-7wcj-zvjq-xud3"},{"vulnerability":"VCID-8par-whwz-6kft"},{"vulnerability":"VCID-969r-9mvk-uyh4"},{"vulnerability":"VCID-b3e6-k53t-bkgk"},{"vulnerability":"VCID-gxkt-bvtg-gbaj"},{"vulnerability":"VCID-squd-j9t3-9khh"},{"vulnerability":"VCID-swgb-7b34-h3a9"},{"vulnerability":"VCID-x61z-9ntw-x3dh"},{"vulnerability":"VCID-zevs-1ge5-y7g7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/urllib3@1.18.1"}],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/4552?format=json","purl":"pkg:pypi/urllib3@1.17","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-4evk-srqq-fuef"},{"vulnerability":"VCID-5tkp-pxz9-h7c2"},{"vulnerability":"VCID-692s-9j5p-gbf1"},{"vulnerability":"VCID-6kxp-qa5x-q3bq"},{"vulnerability":"VCID-7wcj-zvjq-xud3"},{"vulnerability":"VCID-8par-whwz-6kft"},{"vulnerability":"VCID-969r-9mvk-uyh4"},{"vulnerability":"VCID-b3e6-k53t-bkgk"},{"vulnerability":"VCID-gxkt-bvtg-gbaj"},{"vulnerability":"VCID-squd-j9t3-9khh"},{"vulnerability":"VCID-swgb-7b34-h3a9"},{"vulnerability":"VCID-x61z-9ntw-x3dh"},{"vulnerability":"VCID-z965-xgv5-fqet"},{"vulnerability":"VCID-zevs-1ge5-y7g7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/urllib3@1.17"},{"url":"http://public2.vulnerablecode.io/api/packages/4553?format=json","purl":"pkg:pypi/urllib3@1.18","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-4evk-srqq-fuef"},{"vulnerability":"VCID-5tkp-pxz9-h7c2"},{"vulnerability":"VCID-692s-9j5p-gbf1"},{"vulnerability":"VCID-6kxp-qa5x-q3bq"},{"vulnerability":"VCID-7wcj-zvjq-xud3"},{"vulnerability":"VCID-8par-whwz-6kft"},{"vulnerability":"VCID-969r-9mvk-uyh4"},{"vulnerability":"VCID-b3e6-k53t-bkgk"},{"vulnerability":"VCID-gxkt-bvtg-gbaj"},{"vulnerability":"VCID-squd-j9t3-9khh"},{"vulnerability":"VCID-swgb-7b34-h3a9"},{"vulnerability":"VCID-x61z-9ntw-x3dh"},{"vulnerability":"VCID-z965-xgv5-fqet"},{"vulnerability":"VCID-zevs-1ge5-y7g7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/urllib3@1.18"}],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2016-9015","reference_id":"","reference_type":"","scores":[{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11181","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11431","published_at":"2026-05-14T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11378","published_at":"2026-05-12T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11337","published_at":"2026-05-11T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11373","published_at":"2026-05-09T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11313","published_at":"2026-05-07T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18237","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.1819","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18345","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18399","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18099","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18184","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.1824","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18193","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18142","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18086","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18098","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18128","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.18034","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.1801","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00058","scoring_system":"epss","scoring_elements":"0.17974","published_at":"2026-04-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2016-9015"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"2.6","scoring_system":"cvssv2","scoring_elements":"AV:N/AC:H/Au:N/C:P/I:N/A:N"},{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2017-98.yaml","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2017-98.yaml"},{"reference_url":"https://github.com/urllib3/urllib3","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/urllib3/urllib3"},{"reference_url":"https://github.com/urllib3/urllib3/commit/c32cdbc16a9634fa0f8c829d1270301570158715","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/urllib3/urllib3/commit/c32cdbc16a9634fa0f8c829d1270301570158715"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9015","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9015"},{"reference_url":"https://web.archive.org/web/20210123184150/http://www.securityfocus.com/bid/93941","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20210123184150/http://www.securityfocus.com/bid/93941"},{"reference_url":"http://www.openwall.com/lists/oss-security/2016/10/27/6","reference_id":"","reference_type":"","scores":[{"value":"3.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"6.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2016/10/27/6"},{"reference_url":"http://www.securityfocus.com/bid/93941","reference_id":"","reference_type":"","scores":[],"url":"http://www.securityfocus.com/bid/93941"},{"reference_url":"https://github.com/advisories/GHSA-v4w5-p2hg-8fh6","reference_id":"GHSA-v4w5-p2hg-8fh6","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-v4w5-p2hg-8fh6"}],"weaknesses":[{"cwe_id":295,"name":"Improper Certificate Validation","description":"The product does not validate, or incorrectly validates, a certificate."},{"cwe_id":937,"name":"OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities","description":"Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013."},{"cwe_id":1035,"name":"OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities","description":"Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017."}],"exploits":[],"severity_range_score":"2.6 - 6.9","exploitability":"0.5","weighted_severity":"6.2","risk_score":3.1,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-z965-xgv5-fqet"}