{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/63326?format=json","vulnerability_id":"VCID-bxng-uq7z-hubn","summary":"The Upgrade-Insecure-Requests (UIR) specification states that if UIR is enabled through Content Security Policy (CSP), navigation to a same-origin URL must be upgraded to HTTPS. Firefox will incorrectly navigate to an HTTP URL rather than perform the security upgrade requested by the CSP in some circumstances, allowing for potential man-in-the-middle attacks on the linked resources.","aliases":[{"alias":"CVE-2019-9803"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/371369?format=json","purl":"pkg:alpm/archlinux/firefox@66.0-1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-8rq6-26hu-m3gz"},{"vulnerability":"VCID-sk9f-516d-xqh7"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/firefox@66.0-1"},{"url":"http://public2.vulnerablecode.io/api/packages/582429?format=json","purl":"pkg:deb/debian/firefox@66.0-1?distro=sid","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@66.0-1%3Fdistro=sid"},{"url":"http://public2.vulnerablecode.io/api/packages/582059?format=json","purl":"pkg:deb/debian/firefox@149.0-1?distro=sid","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@149.0-1%3Fdistro=sid"},{"url":"http://public2.vulnerablecode.io/api/packages/1059611?format=json","purl":"pkg:deb/debian/firefox@149.0.2-1?distro=sid","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@149.0.2-1%3Fdistro=sid"},{"url":"http://public2.vulnerablecode.io/api/packages/1076056?format=json","purl":"pkg:deb/debian/firefox@150.0-1?distro=sid","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@150.0-1%3Fdistro=sid"},{"url":"http://public2.vulnerablecode.io/api/packages/1088670?format=json","purl":"pkg:deb/debian/firefox@150.0.1-1?distro=sid","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@150.0.1-1%3Fdistro=sid"}],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/371373?format=json","purl":"pkg:alpm/archlinux/firefox@65.0.2-1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-23v6-x6d6-buca"},{"vulnerability":"VCID-4555-zn45-mfd8"},{"vulnerability":"VCID-7aua-26jh-y3cr"},{"vulnerability":"VCID-7yw2-2r4n-rugg"},{"vulnerability":"VCID-a2k9-85qx-u7cy"},{"vulnerability":"VCID-bxng-uq7z-hubn"},{"vulnerability":"VCID-drcd-xhd2-27hn"},{"vulnerability":"VCID-f2z3-egzk-efgj"},{"vulnerability":"VCID-g45q-v1td-9qcz"},{"vulnerability":"VCID-gyt6-vfya-pueg"},{"vulnerability":"VCID-rhzx-ha7x-dfew"},{"vulnerability":"VCID-t1cv-pb54-xyge"},{"vulnerability":"VCID-tff1-6wkz-jyar"},{"vulnerability":"VCID-vrvn-krwb-d3dr"},{"vulnerability":"VCID-wwck-cpa8-y3c5"},{"vulnerability":"VCID-x4sm-zyc1-ffd4"},{"vulnerability":"VCID-zcdh-q78g-x7gr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/firefox@65.0.2-1"}],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2019-9803","reference_id":"","reference_type":"","scores":[{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.30803","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31335","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31031","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.30953","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31474","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31515","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31333","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31387","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31417","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31421","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31377","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31339","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31372","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31351","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31323","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00122","scoring_system":"epss","scoring_elements":"0.31153","published_at":"2026-04-24T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2019-9803"},{"reference_url":"https://security.archlinux.org/ASA-201903-11","reference_id":"ASA-201903-11","reference_type":"","scores":[],"url":"https://security.archlinux.org/ASA-201903-11"},{"reference_url":"https://security.archlinux.org/AVG-925","reference_id":"AVG-925","reference_type":"","scores":[{"value":"Critical","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-925"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-07","reference_id":"mfsa2019-07","reference_type":"","scores":[{"value":"critical","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-07"},{"reference_url":"https://usn.ubuntu.com/3918-1/","reference_id":"USN-3918-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/3918-1/"},{"reference_url":"https://usn.ubuntu.com/3918-2/","reference_id":"USN-3918-2","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/3918-2/"}],"weaknesses":[],"exploits":[],"severity_range_score":"9.0 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