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Plack-1.0055
⭐ Starred 488 / Plack::Middleware::NullLogger
Security Advisories (1)
CVE-2026-115825 (2026-10-25)

HTTP::Server::PSGI versions before 1.0056 for Perl allow a single request to crash the server by declaring a large Content-Length. The request body is read with sysread() calls sized by the remaining Content-Length. Perl grows the read buffer to the requested length before any data arrives, so the server tries to allocate as much memory as the client declares. A remote attacker can send one request with a large Content-Length and a few body bytes, and perl exits with an out-of-memory error before the application is called. HTTP::Server::PSGI runs as a single process, so the server stays down until restarted.

NAME

Plack::Middleware::NullLogger - Send logs to /dev/null

SYNOPSIS

enable "NullLogger";

DESCRIPTION

NullLogger is a middleware component that receives logs and does nothing but discarding them. Might be useful to shut up all the logs from frameworks in one shot.

AUTHOR

Tatsuhiko Miyagawa