---
id: CVE-2026-110656
title: >-
  miniupnpc through 2.3.3 contains a one-byte heap out-of-bounds read
  vulnerability in the minixml parseelt function's namespace-prefix handling
  that skips an end-of-buffer check after advancing past ':'
summary: >-
  miniupnpc through 2.3.3 contains a one-byte heap out-of-bounds read
  vulnerability in the minixml parseelt function's namespace-prefix handling
  that skips an end-of-buffer check after advancing past ':'. A malicious or
  spoofed UPnP gatewa…
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-125
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T16:17:42.363'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110656'
references:
  - url: 'https://github.com/miniupnp/miniupnp'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/miniupnp/miniupnp/blob/bf4215a7574f88aa55859db9db00e3ae58cf42d6/miniupnpc/src/minixml.c#L141
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/miniupnp/miniupnp/commit/64ef08a12aabab57be0bf7e40f047c8f14dedf9c
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind-pwn/miniupnpc-minixml-oob-read'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/miniupnpc-through-2.3.3-heap-out-of-bounds-read-via-minixml-parseelt
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-14T16:40:32.113Z'
vendor: miniupnp project
product: miniupnpc
affected:
  - miniupnpc <= 2.3.3
---

## Overview

miniupnpc through 2.3.3 contains a one-byte heap out-of-bounds read vulnerability in the minixml parseelt function's namespace-prefix handling that skips an end-of-buffer check after advancing past ':'. A malicious or spoofed UPnP gateway on the local network can send a device description or SOAP reply ending in ':' within an element name to crash the client.

## Remediation

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