{"action":"Upgrade symfony to 2.8.6+dfsg-1 or later.","affected":[{"fixed":"2.8.6+dfsg-1","introduced":"0"}],"component":"symfony","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["2.8.6+dfsg-1"],"id":"tcs_01M5NBHAD55WM8DG8ECBWWM0YN","modified_at":"2026-09-22T07:01:50.653768787Z","published_at":"2017-02-07T17:59:00.303Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-2403","https://security-tracker.debian.org/tracker/CVE-2016-2403"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-2403#Debian:13/symfony","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-2403"}],"summary":"Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind."}