CVE Watch26 oct 2026

CVE-2026-115822

Starman versions before 0.4019 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies. Starman

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0-100

Publicado: 25 oct 2026 · Última mod.: 26 oct 2026 · CWE-1333

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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.

Referencias oficiales

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