CVE-2026-76151

Out-of-bounds read (buffer over-read) in the HTTP Cache-Control response header parsing in the QtNetwork module in Qt Group Qt 6.0.0 through 6.8.8, and 6.9.0 through 6.11.1, allows remote attackers to cause a denial of service (application crash) via an excessively large Cache-Control header value returned by an untrusted or compromised HTTP server to an application using QNetworkAccessManager. Only the client side of the connection is affected and 32-bit builds are not affected; the out-of-bounds access is read-only, with no information disclosure and no code execution.

CVSS

No CVSS.

References

Link	Resource
https://codereview.qt-project.org/c/qt/qtbase/+/752129

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-16 10:16

Updated : 2026-09-16 10:16

NVD link : CVE-2026-76151

Mitre link : CVE-2026-76151

CVE.ORG link : CVE-2026-76151

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

CWE-197

Numeric Truncation Error

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