{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/63294?format=json","vulnerability_id":"VCID-tkmh-549z-4qhd","summary":"WebExtensions can use request redirection and a filterReponseData filter to bypass host permission settings to redirect network traffic and access content from a host for which they do not have explicit user permission.","aliases":[{"alias":"CVE-2018-5166"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/371449?format=json","purl":"pkg:alpm/archlinux/firefox@60.0-1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/firefox@60.0-1"},{"url":"http://public2.vulnerablecode.io/api/packages/583637?format=json","purl":"pkg:deb/debian/firefox@60.0-1?distro=sid","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@60.0-1%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/371448?format=json","purl":"pkg:alpm/archlinux/firefox@59.0.2-3","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1njr-8t2z-13ex"},{"vulnerability":"VCID-2mf4-kpr7-3kcu"},{"vulnerability":"VCID-4trh-3k93-97br"},{"vulnerability":"VCID-4znr-5fxr-qqhc"},{"vulnerability":"VCID-7ksf-b6g3-ukcc"},{"vulnerability":"VCID-8vn5-q4h7-ffa6"},{"vulnerability":"VCID-95qq-zty2-2qa8"},{"vulnerability":"VCID-d4bx-x9pb-8kfx"},{"vulnerability":"VCID-ewqm-puf8-hkbv"},{"vulnerability":"VCID-g7fw-yt1c-fqht"},{"vulnerability":"VCID-geb6-buda-4fdb"},{"vulnerability":"VCID-jtrv-jyme-sybh"},{"vulnerability":"VCID-kufd-jgaq-jfd2"},{"vulnerability":"VCID-mfwc-dm4n-vbey"},{"vulnerability":"VCID-q3au-wru3-pbet"},{"vulnerability":"VCID-qvj2-uwha-xff9"},{"vulnerability":"VCID-rjjb-7ycx-cuaa"},{"vulnerability":"VCID-rpj2-156g-aqcu"},{"vulnerability":"VCID-tkmh-549z-4qhd"},{"vulnerability":"VCID-v96d-equt-6bay"},{"vulnerability":"VCID-w3wj-w2gp-kqh4"},{"vulnerability":"VCID-w41h-2xyb-h3fj"},{"vulnerability":"VCID-w44w-qwmk-mbbd"},{"vulnerability":"VCID-zxn1-pdzk-sfdb"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/firefox@59.0.2-3"}],"references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5166.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5166.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2018-5166","reference_id":"","reference_type":"","scores":[{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73134","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73274","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73233","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73268","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73281","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73279","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73144","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73165","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73139","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73175","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73189","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73213","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73194","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73188","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.73231","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00752","scoring_system":"epss","scoring_elements":"0.7324","published_at":"2026-04-18T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2018-5166"},{"reference_url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1437325","reference_id":"","reference_type":"","scores":[],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1437325"},{"reference_url":"https://www.mozilla.org/security/advisories/mfsa2018-11/","reference_id":"","reference_type":"","scores":[],"url":"https://www.mozilla.org/security/advisories/mfsa2018-11/"},{"reference_url":"http://www.securityfocus.com/bid/104139","reference_id":"","reference_type":"","scores":[],"url":"http://www.securityfocus.com/bid/104139"},{"reference_url":"http://www.securitytracker.com/id/1040896","reference_id":"","reference_type":"","scores":[],"url":"http://www.securitytracker.com/id/1040896"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1576267","reference_id":"1576267","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1576267"},{"reference_url":"https://security.archlinux.org/ASA-201805-10","reference_id":"ASA-201805-10","reference_type":"","scores":[],"url":"https://security.archlinux.org/ASA-201805-10"},{"reference_url":"https://security.archlinux.org/AVG-693","reference_id":"AVG-693","reference_type":"","scores":[{"value":"Critical","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-693"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*","reference_id":"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*","reference_id":"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","reference_id":"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*","reference_id":"cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","reference_id":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2018-5166","reference_id":"CVE-2018-5166","reference_type":"","scores":[{"value":"5.0","scoring_system":"cvssv2","scoring_elements":"AV:N/AC:L/Au:N/C:P/I:N/A:N"},{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-5166"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2018-11","reference_id":"mfsa2018-11","reference_type":"","scores":[{"value":"critical","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2018-11"},{"reference_url":"https://usn.ubuntu.com/3645-1/","reference_id":"USN-3645-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/3645-1/"}],"weaknesses":[{"cwe_id":266,"name":"Incorrect Privilege Assignment","description":"A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor."},{"cwe_id":269,"name":"Improper Privilege Management","description":"The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor."}],"exploits":[],"severity_range_score":"5.0 - 10.0","exploitability":"0.5","weighted_severity":"9.0","risk_score":4.5,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-tkmh-549z-4qhd"}