{"action":"Upgrade firefox-esr to 140.4.0esr-1~deb13u1 or later.","affected":[{"fixed":"140.4.0esr-1~deb13u1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["140.4.0esr-1~deb13u1"],"id":"tcs_01M5NMVX90K6W5G2SA6SSST6YQ","modified_at":"2026-10-24T09:47:34.190601360Z","published_at":"2025-10-14T13:15:37.330Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-11711","https://security-tracker.debian.org/tracker/CVE-2025-11711"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-11711#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-11711"}],"summary":"There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderb"}