{"action":"Upgrade thunderbird to 1:78.3.1-1 or later.","affected":[{"fixed":"1:78.3.1-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:78.3.1-1"],"id":"tcs_01M5NENJFAMQGQDSCGWAPBWKVJ","modified_at":"2026-10-26T12:02:27.120631896Z","published_at":"2020-10-01T19:15:13.893Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-15678","https://security-tracker.debian.org/tracker/CVE-2020-15678"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-15678#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-15678"}],"summary":"When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedC"}