CVE catalog

CVE-2026-76151

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Sep 15, 2026, 10:00:00 PM UTC
Updated: Sep 16, 2026, 10:16:52 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.67% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	qt6-base	sid	`6.11.2+dfsg-7`	fixed
Debian	qt6-base	forky	`6.11.2+dfsg-5`	fixed
Debian	qt6-base	trixie	`6.8.2+dfsg-9+deb13u2`	vulnerable
Debian	qt6-base	bookworm	`6.4.2+dfsg-10`	vulnerable
Debian	qtbase-opensource-src	sid	`5.15.19+dfsg-6`	not affected
Debian	qtbase-opensource-src	forky	`5.15.19+dfsg-5`	not affected
Debian	qtbase-opensource-src	trixie	`5.15.15+dfsg-6+deb13u1`	not affected
Debian	qtbase-opensource-src	bookworm	`5.15.8+dfsg-11+deb12u3`	not affected
Opensuse	AusweisApp	tumbleweed	`2.6.0-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	qt6-base	source	sid	`6.11.2+dfsg-5`	not yet assigned	Not reported	Not reported
Debian	qt6-base	source	forky	`6.11.2+dfsg-5`	not yet assigned	Not reported	Not reported
Debian	qt6-base	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	qt6-base	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	qtbase-opensource-src	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	qtbase-opensource-src	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	qtbase-opensource-src	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	qtbase-opensource-src	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Opensuse	AusweisApp	rpm	tumbleweed	`2.6.0-1.1`	Not reported	OPENSUSE-SU-2026:12071-1	Not reported

Notes

[trixie] qt6-base: Minor issue [bookworm] qt6-base: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libqt6concurrent6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6core6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6dbus6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6gui6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6network6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6opengl6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6opengl6-dev]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6openglwidgets6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6printsupport6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6sql6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6sql6-ibase]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6sql6-mysql]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6sql6-odbc]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6sql6-psql]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6sql6-sqlite]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6test6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6widgets6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[libqt6xml6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[qmake6]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
[qmake6-bin]Affected
Source package: [qt6-base]
Details (2)
- 6.4.2+dfsg-10 · amd64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12
- 6.4.2+dfsg-10 · arm64 · bookworm
  Affected
  nvd · qt6-base · debian · bookworm; nvd · qt6-base · debian · 12

Next results

Observed: Oct 23, 2026, 9:09:53 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]