CVE-2026-57488

CVE-2026-57488 · pupnp: Integer truncation in HTTP Content-Length parsing enables request smuggling

This page contains facts from public vulnerability sources. Check the original advisory before updating.

pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.2, raw_to_int in upnp/src/genlib/net/http/httpparser.c parses Content-Length with strtol and casts the resulting long to a 32-bit int before the caller stores it as unsigned int. On LP64 systems, values greater than INT_MAX can truncate or wrap, so the HTTP parser can accept a body length different from the declared value. A remote adjacent-network peer can use the resulting parser disagreement to leave bytes to be interpreted as another request in persistent or proxied contexts, or can make a worker wait for an extremely large body and cause denial of service. This issue is fixed in 2.0.2.

CVSS 7.1 · High · EPSS 0.3% · Fix available

Published

2026-10-16T15:34:49.625Z

Updated

2026-10-16T19:08:25.462Z

Stack: system

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