---
id: "CVE-2026-95620"
kind: "vulnerability"
aliases: ["CVE-2026-95620"]
title: "Qt: HTTP/2 client use-after-free lets a malicious server crash apps"
severity: "low"
cvss: 2.1
epss: 0.00365
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["c++", "desktop-apps", "package", "qt"]
not_affected_if: ["http1-only", "trusted-servers-only"]
published_at: "2026-10-23T12:18:20+00:00"
first_seen_at: "2026-10-23T21:57:33+00:00"
updated_at: "2026-10-25T12:38:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-95620", "first_seen_at": "2026-10-23T21:57:33+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-95620", "first_seen_at": "2026-10-25T12:38:51+00:00"}]
---

# Qt: HTTP/2 client use-after-free lets a malicious server crash apps

The Qt Network module's QNetworkAccessManager HTTP/2 client contains a use-after-free bug. A malicious or compromised HTTP/2 server can crash the client application, which affects availability only.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-95620
- 2026-10-25T12:38:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-95620

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_