Vulnerability Description
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.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-76151?
CVE-2026-76151 is a documented vulnerability. 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...
How severe is CVE-2026-76151?
CVSS scoring is not yet available for CVE-2026-76151. Check NVD for updates.
Is there a patch for CVE-2026-76151?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.