{"action":"Upgrade stunnel4 to 3:5.18-1 or later.","affected":[{"fixed":"3:5.18-1","introduced":"0"}],"component":"stunnel4","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3:5.18-1"],"id":"tcs_01M5NB754B10FA9DGHATMSFSFM","modified_at":"2026-09-09T06:47:18.899175187Z","published_at":"2015-05-14T00:59:06.147Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2015-3644","https://security-tracker.debian.org/tracker/CVE-2015-3644"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2015-3644#Debian:13/stunnel4","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2015-3644"}],"summary":"Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expected server after the initial connection, which allows remote attackers to bypass authenticat"}