{"action":"Upgrade thunderbird to 1:60.5.0-1 or later.","affected":[{"fixed":"1:60.5.0-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:60.5.0-1"],"id":"tcs_01M5ND7J0CEMCE9GGD54B5G8HH","modified_at":"2026-10-23T18:03:56.403419192Z","published_at":"2019-02-05T21:29:00.330Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-18500","https://security-tracker.debian.org/tracker/CVE-2018-18500"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-18500#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-18500"}],"summary":"A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a poten"}