{"action":"Upgrade firefox-esr to 153.6.0esr-1~deb13u1 or later.","affected":[{"fixed":"153.6.0esr-1~deb13u1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["153.6.0esr-1~deb13u1"],"id":"tcs_01M5ZT5NFHKTC5GSGFS6AG085E","modified_at":"2026-10-29T12:00:14.694297098Z","published_at":"2026-10-27T14:16:47.533Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-117920","https://security-tracker.debian.org/tracker/CVE-2026-117920"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-117920#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-117920"}],"summary":"Use-after-free in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6."}