---
id: CVE-2017-16932
title: >-
  parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in
  parameter entities.
summary: >-
  parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in
  parameter entities.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-835
  - CWE-835
vendor: xmlsoft
product: libxml2
affected:
  - libxml2 <= 2.9.4
published: '2017-11-23'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T07:16:39.660'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2017-16932'
references:
  - url: 'http://xmlsoft.org/news.html'
    label: cve@mitre.org
  - url: 'https://blog.clamav.net/2018/07/clamav-01001-has-been-released.html'
    label: cve@mitre.org
  - url: 'https://bugzilla.gnome.org/show_bug.cgi?id=759579'
    label: cve@mitre.org
  - url: >-
      https://github.com/GNOME/libxml2/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961
    label: cve@mitre.org
  - url: >-
      https://gitlab.gnome.org/GNOME/libxml2/-/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961
    label: cve@mitre.org
  - url: >-
      https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
    label: cve@mitre.org
  - url: >-
      https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html'
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html'
    label: cve@mitre.org
  - url: 'https://usn.ubuntu.com/3739-1/'
    label: cve@mitre.org
  - url: 'http://xmlsoft.org/news.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://blog.clamav.net/2018/07/clamav-01001-has-been-released.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.gnome.org/show_bug.cgi?id=759579'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/GNOME/libxml2/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://usn.ubuntu.com/3739-1/'
    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: 0.05928
epssPercentile: 0.93104
ingestedAt: '2026-10-14T07:21:04.798Z'
---

## Overview

parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.

## Affected

- `libxml2 <= 2.9.4`

## Remediation

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