Disclosure summary
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.
Source-reported weakness categories
CWE-190
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2023-51714
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| debian | debian_linux | 10.0 |
| qt | qt | * {"versionStartIncluding":"6.6.0","versionEndExcluding":"6.6.2"} |
Original records & references
- NIST NVD record
- CVE Program record
- codereview.qt-project.org — Patch, Product
- codereview.qt-project.org — Patch, Product
- lists.debian.org — Mailing List, Third Party Advisory
- codereview.qt-project.org — Patch, Product
- codereview.qt-project.org — Patch, Product
- lists.debian.org — Mailing List, Third Party Advisory
PUBLISHED 2023-12-24T16:15:25-05:00
MODIFIED 2026-10-08T18:17:25-04:00
INGESTED 2026-10-10T20:50:21-04:00