{"action":"Upgrade firefox-esr to 45.6.0esr-1 or later.","affected":[{"fixed":"45.6.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["45.6.0esr-1"],"id":"tcs_01M5NBVJKGCF5DCY4GBSW8QRZW","modified_at":"2026-09-22T07:02:26.354818179Z","published_at":"2018-06-11T21:29:02.467Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-9904","https://security-tracker.debian.org/tracker/CVE-2016-9904"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-9904#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-9904"}],"summary":"An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts. This could be used to leak information, such as username"}