---
id: CVE-2023-32665
title: A flaw was found in GLib
summary: >-
  A flaw was found in GLib. GVariant deserialization is vulnerable to an
  exponential blowup issue where a crafted GVariant can cause excessive
  processing, leading to denial of service.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-502
vendor: gnome
product: glib
affected:
  - glib < 2.74.4
patched:
  - glib 2.74.4
published: '2023-09-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T00:16:32.803'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-32665'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2023-32665'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2211827'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/glib/-/issues/2121'
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2023/09/msg00030.html'
    label: secalert@redhat.com
  - url: 'https://security.gentoo.org/glsa/202311-18'
    label: secalert@redhat.com
  - url: 'https://security.netapp.com/advisory/ntap-20240426-0006/'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2023-32665'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2211827'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://gitlab.gnome.org/GNOME/glib/-/issues/2121'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2023/09/msg00030.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/202311-18'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20240426-0006/'
    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
  - cve.org
  - exploit-available
epss: 0.00389
epssPercentile: 0.3129
ingestedAt: '2026-10-15T01:08:04.206Z'
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2023-11-27T17:04:41.563399Z'
---

## Overview

A flaw was found in GLib. GVariant deserialization is vulnerable to an exponential blowup issue where a crafted GVariant can cause excessive processing, leading to denial of service.

## Affected

- `glib < 2.74.4`

## Remediation

Upgrade past the affected range:

- `glib 2.74.4`