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Critical 9.8Published Dec 24, 2023
CVE-2023-51714An 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.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
debian debian_linux debian:debian_linux | 10.0 | NVD |
qt qt qt:qt | from 5.7 before 5.15.17; from 6.0.0 before 6.2.11; from 6.3.0 before 6.5.4; from 6.6.0 before 6.6.2 | NVD |
References
- https://codereview.qt-project.org/c/qt/qtbase/+/524864
- https://codereview.qt-project.org/c/qt/qtbase/+/524865/3
- https://lists.debian.org/debian-lts-announce/2024/04/msg00027.htmlmailing-list
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.