---
id: CVE-2025-12105
title: >-
  A flaw was found in the asynchronous message queue handling of the libsoup
  library, widely used by GNOME and WebKit-based applications to manage HTTP/2
  communications
summary: >-
  A flaw was found in the asynchronous message queue handling of the libsoup
  library, widely used by GNOME and WebKit-based applications to manage HTTP/2
  communications. When network operations are aborted at specific timing
  intervals, an …
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-416
published: '2025-10-23'
updated: '2026-06-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12105'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2025:23139'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23437'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-12105'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2405992'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/481'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00456
epssPercentile: 0.36971
ingestedAt: '2026-06-29T13:24:34.592Z'
---

## Overview

A flaw was found in the asynchronous message queue handling of the libsoup library, widely used by GNOME and WebKit-based applications to manage HTTP/2 communications. When network operations are aborted at specific timing intervals, an internal message queue item may be freed twice due to missing state synchronization. This leads to a use-after-free memory access, potentially crashing the affected application. Attackers could exploit this behavior remotely by triggering specific HTTP/2 read and cancel sequences, resulting in a denial-of-service condition.

## Remediation

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