{"action":"Upgrade ruby to 2.6.5-r0 or later.","affected":[{"fixed":"2.6.5-r0","introduced":"2.4.0"}],"component":"ruby","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.13","exploited":false,"fixed_versions":["2.6.5-r0"],"id":"tcs_01M5NBF404WM4T0B09HAB0XMY2","modified_at":"2026-09-21T06:17:52.495152404Z","published_at":"2019-11-26T18:15:15.100Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2019-16201","https://security.alpinelinux.org/vuln/CVE-2019-16201"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2019-16201#Alpine:v3.13/ruby","url":"https://osv.dev/vulnerability/ALPINE-CVE-2019-16201"}],"summary":"WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBri"}