---
id: CVE-2025-32049
title: A flaw was found in libsoup
summary: >-
  A flaw was found in libsoup. The SoupWebsocketConnection may accept a large
  WebSocket message, which may cause libsoup to allocate memory and lead to a
  denial of service (DoS).
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-770
published: '2025-04-03'
updated: '2026-06-26'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-32049'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2025:21657'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8126'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8128'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8132'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8139'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8140'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8252'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8480'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8481'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8482'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:8663'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:9179'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-32049'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2357066'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/libsoup/-/issues/390'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/408'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00857
epssPercentile: 0.56908
ingestedAt: '2026-06-26T16:43:13.575Z'
---

## Overview

A flaw was found in libsoup. The SoupWebsocketConnection may accept a large WebSocket message, which may cause libsoup to allocate memory and lead to a denial of service (DoS).

## Remediation

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