{"api_version":"1","generated_at":"2026-04-23T04:10:11+00:00","cve":"CVE-2019-11747","urls":{"html":"https://cve.report/CVE-2019-11747","api":"https://cve.report/api/cve/CVE-2019-11747.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2019-11747","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-11747"},"summary":{"title":"CVE-2019-11747","description":"The \"Forget about this site\" feature in the History pane is intended to remove all saved user data that indicates a user has visited a site. This includes removing any HTTP Strict Transport Security (HSTS) settings received from sites that use it. Due to a bug, sites on the pre-load list also have their HSTS setting removed. On the next visit to that site if the user specifies an http: URL rather than secure https: they will not be protected by the pre-loaded HSTS setting. After that visit the site's HSTS setting will be restored. 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This includes removing any HTTP Strict Transport Security (HSTS) settings received from sites that use it. Due to a bug, sites on the pre-load list also have their HSTS setting removed. On the next visit to that site if the user specifies an http: URL rather than secure https: they will not be protected by the pre-loaded HSTS setting. After that visit the site's HSTS setting will be restored. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.","Type":"Description","Title":null},{"CveYear":"2019","CveId":"11747","Ordinal":"2","NoteData":"2019-09-27","Type":"Other","Title":"Published"},{"CveYear":"2019","CveId":"11747","Ordinal":"3","NoteData":"2019-10-06","Type":"Other","Title":"Modified"}]}}}