{"action":"Upgrade firefox-esr to 52.6.0esr-1 or later.","affected":[{"fixed":"52.6.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["52.6.0esr-1"],"id":"tcs_01M5NDE271SP2VB64K9JB0JQ50","modified_at":"2026-10-23T18:04:48.114181262Z","published_at":"2018-06-11T21:29:12.953Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-5104","https://security-tracker.debian.org/tracker/CVE-2018-5104"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-5104#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-5104"}],"summary":"A use-after-free vulnerability can occur during font face manipulation when a font face is freed while still in use, resulting in a potentially exploitable crash. This vulnerability affects Thunderbir"}