---
id: CVE-2026-95620
title: >-
  Use-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts
  Qt
summary: >-
  A use-after-free vulnerability in the Qt QNetworkAccessManager HTTP/2 client
  support of the Qt Network module allows a malicious or compromised HTTP/2
  server to cause the client application to crash, affecting availability.
severity: low
cvss: 2.1
cvssVector: >-
  CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green
cvssSource: cna
cwe:
  - CWE-416
vendor: qt
product: qt
affected:
  - qt >= 6.9.0 < 6.11.3
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T10:56:15.281Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-95620'
references:
  - url: >-
      https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-95620:
  - url: 'https://codereview.qt-project.org/c/qt/qtbase/+/759717'
tags:
  - cve.org
ingestedAt: '2026-10-23T11:22:54.788Z'
---

## Overview

A use-after-free vulnerability in the Qt QNetworkAccessManager HTTP/2 client support of the Qt Network module allows a malicious or compromised HTTP/2 server to cause the client application to crash, affecting availability.

## Affected

- `qt >= 6.9.0 < 6.11.3`

## Remediation

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