CVE-2026-115822None▾ SunlitStarman 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 26.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.3%
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.
Starman < 0.4019Upgrade to Starman 0.4019 or later.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-115824NoneStarman versions before 0.4019 for Perl allow memory exhaustion via unbounded buffering of chunked request bodies
CVE-2026-115817NoneStarman versions before 0.4019 for Perl allow a stalled request body to hold a worker indefinitely, as read_timeout covers only the headers
CVE-2026-115823NoneStarman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections
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