{"action":"Upgrade symfony to 4.4.8-1 or later.","affected":[{"fixed":"4.4.8-1","introduced":"0"}],"component":"symfony","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["4.4.8-1"],"id":"tcs_01M5NF4GWCYDS6ZM920CDF31CS","modified_at":"2026-09-11T11:02:35.377969665Z","published_at":"2020-03-30T20:15:19.570Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-5255","https://security-tracker.debian.org/tracker/CVE-2020-5255"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-5255","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-5255"}],"summary":"In Symfony before versions 4.4.7 and 5.0.7, when a `Response` does not contain a `Content-Type` header, affected versions of Symfony can fallback to the format defined in the `Accept` header of the re"}