{"action":"Upgrade ruby-rack to 3.1.20-0+deb13u2 or later.","affected":[{"fixed":"3.1.20-0+deb13u2","introduced":"0"}],"component":"ruby-rack","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3.1.20-0+deb13u2"],"id":"tcs_01M5NRSTTG3YY0W9GMP9VPJA2B","modified_at":"2026-10-01T03:03:22.246683286Z","published_at":"2026-04-02T17:16:26.420Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-34831","https://security-tracker.debian.org/tracker/CVE-2026-34831"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-34831#Debian:13/ruby-rack","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-34831"}],"summary":"Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Files#fail sets the Content-Length response header using String#size instead of String#bytesize. When th"}