{"action":"Upgrade thunderbird to 1:78.7.0-1 or later.","affected":[{"fixed":"1:78.7.0-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:78.7.0-1"],"id":"tcs_01M5NEXTTGRZF3GJ7SECMTFGEF","modified_at":"2026-10-26T12:02:31.112950758Z","published_at":"2021-01-07T14:15:12.173Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-26976","https://security-tracker.debian.org/tracker/CVE-2020-26976"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-26976#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-26976"}],"summary":"When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe n"}