Live › vulnerability › CVE-2026-101201
Go to dashboardA malformed header in binary data passed to QBinaryJson::fromBinaryData() in Qt triggers an out-of-bounds read, which is undefined behaviour. The sources do not say whether this leads to code execution or only a crash or information leak.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Applications built on Qt's JSON binary format code path that parse untrusted binary JSON data through QBinaryJson::fromBinaryData() are the ones to look at. Applications that only handle their own trusted JSON or never parse binary JSON input can likely skip it. The sources do not list affected Qt versions.
No product ranges from the sources yet.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
A malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour because of out-of-bounds read.
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