PT-2026-93427 · Qt Company · Qt
CVE-2026-76151
·
Published
2026-09-16
·
Updated
2026-09-16
CVSS v4.0
4.6
Medium
| Vector | AV:N/AC:L/AT:P/PR:N/UI:N/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:A/V:X/RE:X/U:X |
Name of the Vulnerable Software and Affected Versions
Qt versions 6.0.0 through 6.8.8
Qt versions 6.9.0 through 6.11.1
Description
An out-of-bounds read, also known as a buffer over-read, occurs during the parsing of the HTTP Cache-Control response header within the QtNetwork module. A remote attacker can trigger a denial of service resulting in an application crash by sending an excessively large Cache-Control header value from an untrusted or compromised HTTP server to an application utilizing
QNetworkAccessManager. This issue exclusively affects the client side of the connection and does not impact 32-bit builds. The access is read-only, meaning no information is disclosed and no arbitrary code is executed.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
DoS
Out of bounds Read
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Related Identifiers
Affected Products
Qt