{"id":"DEBIAN-CVE-2026-115822","details":"Starman versions before 0.4019 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.  Starman decodes chunked request bodies before calling the application, matching each chunk-size line with `s/^(([0-9a-fA-F]+).*\\015\\012)//`. A line of hex digits followed by a bare LF and then CRLF never matches, because `.` does not match LF, and each failed attempt backtracks in time quadratic in the length of the hex run. Nothing limits the length of the line.  A remote attacker can exhaust worker CPU by sending such requests to any route.","modified":"2026-10-27T09:47:32.221328779Z","published":"2026-10-25T17:17:01.637Z","upstream":["CVE-2026-115822"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-115822"}],"affected":[{"package":{"name":"starman","ecosystem":"Debian:12","purl":"pkg:deb/debian/starman?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4016-1","0.4017-1","0.4018-1","0.4019-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115822.json"}},{"package":{"name":"starman","ecosystem":"Debian:13","purl":"pkg:deb/debian/starman?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4017-1","0.4018-0+deb13u1","0.4018-1","0.4019-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115822.json"}},{"package":{"name":"starman","ecosystem":"Debian:14","purl":"pkg:deb/debian/starman?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4017-1","0.4018-1","0.4019-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115822.json"}}],"schema_version":"1.9.2"}