Qt QNetworkAccessManager HTTP/2 Use-After-Free Crash Vulnerability
CVE-2026-95620 Published on October 23, 2026
Use-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts Qt
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.
Vulnerability Analysis
CVE-2026-95620 is exploitable with network access. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-95620 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-95620
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Affected Versions
qt:- Before 6.9.0 is unknown.
- Version 6.9.0 and below 6.11.3 is affected.