{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/63269?format=json","vulnerability_id":"VCID-nexj-aaak-u7aq","summary":"Low descenders on some Tibetan characters in several fonts on OS X are clipped when rendered in the addressbar. When used as part of an Internationalized Domain Name (IDN) this can be used for domain name spoofing attacks. *Note: This attack only affects OS X operating systems. Other operating systems are unaffected.*","aliases":[{"alias":"CVE-2018-5121"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/582227?format=json","purl":"pkg:deb/debian/firefox@0?distro=sid","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/firefox@0%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":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2018-5121","reference_id":"","reference_type":"","scores":[{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76864","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76719","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76814","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76845","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76852","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76722","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76751","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76733","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76764","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76775","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76804","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76784","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76776","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76817","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00981","scoring_system":"epss","scoring_elements":"0.76822","published_at":"2026-04-18T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2018-5121"},{"reference_url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1402368","reference_id":"","reference_type":"","scores":[],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1402368"},{"reference_url":"https://www.mozilla.org/security/advisories/mfsa2018-02/","reference_id":"","reference_type":"","scores":[],"url":"https://www.mozilla.org/security/advisories/mfsa2018-02/"},{"reference_url":"http://www.securityfocus.com/bid/102786","reference_id":"","reference_type":"","scores":[],"url":"http://www.securityfocus.com/bid/102786"},{"reference_url":"http://www.securitytracker.com/id/1040270","reference_id":"","reference_type":"","scores":[],"url":"http://www.securitytracker.com/id/1040270"},{"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:apple:mac_os_x:*:*:*:*:*:*:*:*","reference_id":"cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2018-5121","reference_id":"CVE-2018-5121","reference_type":"","scores":[{"value":"5.0","scoring_system":"cvssv2","scoring_elements":"AV:N/AC:L/Au:N/C:N/I:P/A:N"},{"value":"5.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-5121"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2018-02","reference_id":"mfsa2018-02","reference_type":"","scores":[{"value":"critical","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2018-02"}],"weaknesses":[{"cwe_id":20,"name":"Improper Input Validation","description":"The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly."}],"exploits":[],"severity_range_score":"5.0 - 10.0","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-nexj-aaak-u7aq"}