{"action":"Upgrade firefox-esr to 78.5.0esr-1 or later.","affected":[{"fixed":"78.5.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["78.5.0esr-1"],"id":"tcs_01M5NEXNQKNGBSFP0FG52YG876","modified_at":"2026-10-26T12:02:41.926025675Z","published_at":"2020-12-09T01:15:13.283Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-26961","https://security-tracker.debian.org/tracker/CVE-2020-26961"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-26961#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-26961"}],"summary":"When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped"}