{"action":"Upgrade firefox-esr to 128.11.0esr-1 or later.","affected":[{"fixed":"128.11.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["128.11.0esr-1"],"id":"tcs_01M5NP0DTSRZHQQGDHSXDEN2JE","modified_at":"2026-10-06T09:47:28.734308564Z","published_at":"2025-05-27T13:15:22.100Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-5263","https://security-tracker.debian.org/tracker/CVE-2025-5263"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-5263#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-5263"}],"summary":"Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Fire"}