CVE-2023-51714
criticalAn issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x before 6.6.2.
Vendor / product: Debian — debian linux
An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x before 6.6.2. network/access/http2/hpacktable.cpp has an incorrect HPack integer overflow check.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-12-24 21:15
Modified: 2026-10-08 22:17
NVD status: Analyzed
Last synced 3 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
debian / debian_linux 10.0
qt / qt ≥5.7 <5.15.17, ≥6.0.0 <6.2.11, ≥6.3.0 <6.5.4, ≥6.6.0 <6.6.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://codereview.qt-project.org/c/qt/qtbase/+/524864
Patch / mitigation: https://codereview.qt-project.org/c/qt/qtbase/+/524865/3
Patch / mitigation: https://codereview.qt-project.org/c/qt/qtbase/+/524864
Patch / mitigation: https://codereview.qt-project.org/c/qt/qtbase/+/524865/3
References
- https://codereview.qt-project.org/c/qt/qtbase/+/524864 cve@mitre.org
- https://codereview.qt-project.org/c/qt/qtbase/+/524865/3 cve@mitre.org
- https://lists.debian.org/debian-lts-announce/2024/04/msg00027.html cve@mitre.org
- https://codereview.qt-project.org/c/qt/qtbase/+/524864 af854a3a-2127-422b-91ae-364da2661108
- https://codereview.qt-project.org/c/qt/qtbase/+/524865/3 af854a3a-2127-422b-91ae-364da2661108
- https://lists.debian.org/debian-lts-announce/2024/04/msg00027.html af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗