---
id: CVE-2026-57488
title: >-
  pupnp: Integer truncation in HTTP Content-Length parsing enables request
  smuggling
summary: >-
  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 …
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H'
cvssSource: cna
cwe:
  - CWE-190
  - CWE-444
vendor: pupnp
product: pupnp
affected:
  - pupnp < 2.0.2
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T19:08:06.620494Z'
exploitAvailable: true
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:08:25.462Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-57488'
references:
  - url: 'https://github.com/pupnp/pupnp/security/advisories/GHSA-g6c2-x4r9-352g'
    label: 'https://github.com/pupnp/pupnp/security/advisories/GHSA-g6c2-x4r9-352g'
  - url: >-
      https://github.com/pupnp/pupnp/commit/de9602aef34ff722f3630d66c9be8eaa0aa9f012
    label: >-
      https://github.com/pupnp/pupnp/commit/de9602aef34ff722f3630d66c9be8eaa0aa9f012
  - url: 'https://github.com/pupnp/pupnp/releases/tag/release-2.0.2'
    label: 'https://github.com/pupnp/pupnp/releases/tag/release-2.0.2'
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-16T17:24:46.755Z'
---

## Overview

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.

## Affected

- `pupnp < 2.0.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.