{"action":"Upgrade firefox-esr to 52.3.0esr-1 or later.","affected":[{"fixed":"52.3.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["52.3.0esr-1"],"id":"tcs_01M5NCN66DFMW1RREH908W81XN","modified_at":"2026-09-01T20:03:50.585604586Z","published_at":"2018-06-11T21:29:09.780Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-7800","https://security-tracker.debian.org/tracker/CVE-2017-7800"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-7800#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-7800"}],"summary":"A use-after-free vulnerability can occur in WebSockets when the object holding the connection is freed before the disconnection operation is finished. This results in an exploitable crash. This vulner"}