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CVE-2026-115822

unscored Deferred
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusPublished → DeferredNVD modified 2026-10-26 17:13
  2. StatusReceived → PublishedNVD modified 2026-10-25 16:51
  3. StatusPublished → ReceivedNVD modified 2026-10-25 17:17
  4. First seenunscoredNVD modified 2026-10-25 16:51

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2