---
id: CVE-2016-10739
title: >-
  In the GNU C Library (aka glibc or libc6) through 2.28, the getaddrinfo
  function would successfully parse a string that contained an IPv4 address
  followed by whitespace and arbitrary characters, which could lead applications
  to incorrect…
summary: >-
  In the GNU C Library (aka glibc or libc6) through 2.28, the getaddrinfo
  function would successfully parse a string that contained an IPv4 address
  followed by whitespace and arbitrary characters, which could lead applications
  to incorrect…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-20
vendor: gnu
product: glibc
affected:
  - glibc <= 2.28
  - leap = 15.0
published: '2019-01-21'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T07:16:37.220'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2016-10739'
references:
  - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00082.html'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/bid/106672'
    label: cve@mitre.org
  - url: 'https://access.redhat.com/errata/RHSA-2019:2118'
    label: cve@mitre.org
  - url: 'https://access.redhat.com/errata/RHSA-2019:3513'
    label: cve@mitre.org
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=1347549'
    label: cve@mitre.org
  - url: 'https://sourceware.org/bugzilla/show_bug.cgi?id=20018'
    label: cve@mitre.org
  - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00082.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.securityfocus.com/bid/106672'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://access.redhat.com/errata/RHSA-2019:2118'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://access.redhat.com/errata/RHSA-2019:3513'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=1347549'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://sourceware.org/bugzilla/show_bug.cgi?id=20018'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00479
epssPercentile: 0.39592
ingestedAt: '2026-10-14T07:21:04.804Z'
---

## Overview

In the GNU C Library (aka glibc or libc6) through 2.28, the getaddrinfo function would successfully parse a string that contained an IPv4 address followed by whitespace and arbitrary characters, which could lead applications to incorrectly assume that it had parsed a valid string, without the possibility of embedded HTTP headers or other potentially dangerous substrings.

## Affected

- `glibc <= 2.28`
- `leap = 15.0`

## Remediation

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