{"action":"Upgrade firefox-esr to 52.5.2esr-1 or later.","affected":[{"fixed":"52.5.2esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["52.5.2esr-1"],"id":"tcs_01M5NCNG3ZFK9Y084WAP3TWNMR","modified_at":"2026-09-01T20:03:50.538976625Z","published_at":"2018-06-11T21:29:11.920Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-7843","https://security-tracker.debian.org/tracker/CVE-2017-7843"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-7843","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-7843"}],"summary":"When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode an"}