{"action":"Upgrade firefox-esr to 52.2.0esr-1 or later.","affected":[{"fixed":"52.2.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["52.2.0esr-1"],"id":"tcs_01M5NCMS0PAG37X6JDYETF38AB","modified_at":"2026-09-01T20:02:41.348782541Z","published_at":"2018-06-11T21:29:07.657Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-7749","https://security-tracker.debian.org/tracker/CVE-2017-7749"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-7749","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-7749"}],"summary":"A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 5"}