{"action":"Upgrade firefox-esr to 128.6.0esr-1 or later.","affected":[{"fixed":"128.6.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["128.6.0esr-1"],"id":"tcs_01M5NMSFTF1J537EZME18KG2WF","modified_at":"2026-10-06T09:47:30.140022360Z","published_at":"2025-01-07T16:15:38.663Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-0240","https://security-tracker.debian.org/tracker/CVE-2025-0240"],"severity":{"label":"medium","score":4},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-0240#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-0240"}],"summary":"Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability was fixed in Firefox 134, Firefox ESR 128."}