starman: Starman versions before 0.4019 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked re...
CVE-2026-115822 is fixed in starman on 1 platform by DEBIAN-CVE-2026-115822 (version 0.4019-1), released October 30, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| starman · Debian 14 | 0.4019-1 | DEBIAN-CVE-2026-115822 | Oct 30, 2026 |
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