{"action":"Upgrade firefox-esr to 60.3.0esr-1 or later.","affected":[{"fixed":"60.3.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["60.3.0esr-1"],"id":"tcs_01M5ND01PYYHDQZY2YBF9EYQ4A","modified_at":"2026-10-23T18:03:47.125954376Z","published_at":"2019-02-28T18:29:00.743Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-12395","https://security-tracker.debian.org/tracker/CVE-2018-12395"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-12395#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-12395"}],"summary":"By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are ot"}