---
id: "CVE-2026-96432"
kind: "vulnerability"
aliases: ["CVE-2026-96432"]
title: "Qt Network: malicious HTTP/2 server can crash apps via null pointer"
severity: "low"
cvss: 2.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["c++", "desktop-apps", "package", "qt"]
not_affected_if: ["no-http2-traffic", "trusted-servers-only"]
published_at: "2026-10-26T12:17:08+00:00"
first_seen_at: "2026-10-26T12:29:53+00:00"
updated_at: "2026-10-26T12:31:48+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96432", "first_seen_at": "2026-10-26T12:29:53+00:00"}]
---

# Qt Network: malicious HTTP/2 server can crash apps via null pointer

A malicious or compromised HTTP/2 server that withholds SETTINGS ACK can send RST_STREAM on a completed stream and then a PUSH_PROMISE for it. This triggers a null pointer dereference in QNetworkAccessManager that crashes the application.

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

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-26T12:29:53+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96432

## From the sources

A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed stream, planting a null pointer, and then send a PUSH_PROMISE for that stream, causing a null pointer dereference in the QNetworkAccessManager class of the Qt Network module that crashes the application.

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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_