{"action":"Upgrade firefox-esr to 153.5.0esr-1~deb13u1 or later.","affected":[{"fixed":"153.5.0esr-1~deb13u1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["153.5.0esr-1~deb13u1"],"id":"tcs_01M5NPXPTFG7W4PSY2Z4B16YB2","modified_at":"2026-10-26T20:00:11.094680796Z","published_at":"2026-10-13T13:17:24.370Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-109738","https://security-tracker.debian.org/tracker/CVE-2026-109738"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-109738#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-109738"}],"summary":"Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5."}