---
id: CVE-2026-0716
title: >-
  A flaw was found in libsoup’s WebSocket frame processing when handling
  incoming messages
summary: >-
  A flaw was found in libsoup’s WebSocket frame processing when handling
  incoming messages. If a non-default configuration is used where the maximum
  incoming payload size is unset, the library may read memory outside the
  intended bounds. T…
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L'
cwe:
  - CWE-805
vendor: Red Hat
product: libsoup3
affected:
  - libsoup3 (all versions)
  - libsoup
  - libsoup (all versions)
  - libsoup (all versions)
  - libsoup (all versions)
published: '2026-01-13'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T08:16:35.803'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-0716'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-0716'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2427896'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/libsoup/-/issues/476'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0716.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-0716'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-0716'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-01-14T14:35:48.532034Z'
epss: 0.0036
epssPercentile: 0.29797
ingestedAt: '2026-09-16T07:51:48.493Z'
---

## Overview

A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages. If a non-default configuration is used where the maximum incoming payload size is unset, the library may read memory outside the intended bounds. This can cause unintended memory exposure or a crash. Applications using libsoup’s WebSocket support with this configuration may be impacted.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0716.json)