CVE-2026-95620Use-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts Qt

Description

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-95620: vendor-advisory
• https://codereview.qt-project.org/c/qt/qtbase/+/759717 patch