{"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:13","exploited":false,"fixed_versions":["52.2.0esr-1"],"id":"tcs_01M5NCMVT0HTXDMFN6NA34MEKS","modified_at":"2026-09-01T20:03:50.571874057Z","published_at":"2018-06-11T21:29:08.030Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-7756","https://security-tracker.debian.org/tracker/CVE-2017-7756"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-7756#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-7756"}],"summary":"A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR). This could result in a potentially exploitable crash. This vulnerability affects Firefo"}