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Qt Qt NetworkNull pointer dereference vulnerability in QNetworkAccessManager impacts Qt

Risk 23
Severity
2.1
Null Pointer Dereference
AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:X/RE:L/U:Green

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

First published (updated )
CVE-2026-96432

Qt Qt NetworkUse-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts Qt

Risk 22
Severity
2.1
Use After Free
AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:X/RE:L/U:Green

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.

First published (updated )
CVE-2026-95620

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