{"action":"Upgrade firefox-esr to 60.7.0esr-1 or later.","affected":[{"fixed":"60.7.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["60.7.0esr-1"],"id":"tcs_01M5NEDQ3Q6EFSP64J6DZJ4V1Y","modified_at":"2026-09-21T07:03:15.727101342Z","published_at":"2019-07-23T14:15:17.357Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-9819","https://security-tracker.debian.org/tracker/CVE-2019-9819"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-9819#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-9819"}],"summary":"A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox"}