{"id":"DEBIAN-CVE-2026-71190","details":"In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking (ReDoS). The \"qdtext\" pattern (?:[^\"]|\\\\.)* allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in the proxy worker. A payload of 32 backslash-character pairs exceeds 30 seconds of CPU time. No authentication is required. Repeated requests can exhaust all proxy worker threads, resulting in a complete denial of service.","modified":"2026-09-10T08:47:29.527243205Z","published":"2026-08-05T06:16:40.023Z","upstream":["CVE-2026-71190"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-71190"}],"affected":[{"package":{"name":"swift","ecosystem":"Debian:12","purl":"pkg:deb/debian/swift?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.30.1-0+deb12u2"}]}],"versions":["2.30.0-4","2.30.1-0+deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71190.json"}},{"package":{"name":"swift","ecosystem":"Debian:13","purl":"pkg:deb/debian/swift?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.35.0-4","2.35.1-0+deb13u1","2.35.1-0+deb13u2","2.35.1-0+deb13u3","2.35.1-1","2.35.1-2","2.36.0-1","2.36.0-2","2.36.0-3","2.36.0-4","2.36.0-5","2.36.0-6","2.36.0-7","2.36.0-8","2.37.0-1","2.37.1-1","2.37.1-2","2.37.1-3","2.37.1-4","2.37.1-5","2.37.1-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71190.json"}},{"package":{"name":"swift","ecosystem":"Debian:14","purl":"pkg:deb/debian/swift?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.37.1-6"}]}],"versions":["2.35.0-4","2.35.1-1","2.35.1-2","2.36.0-1","2.36.0-2","2.36.0-3","2.36.0-4","2.36.0-5","2.36.0-6","2.36.0-7","2.36.0-8","2.37.0-1","2.37.1-1","2.37.1-2","2.37.1-3","2.37.1-4","2.37.1-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71190.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}