CVE-2026-107157

Out-of-bounds read vulnerability in QCborValue::fromCbor() impacts Qt Framework

State: Published
Severity: 2.0 Low
Published: Oct 26, 2026
Updated: Oct 27, 2026
Reserved: Oct 7, 2026

Description

Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, which may crash the application and could expose information.

Scores

CVSS	Score	Vector	Source
4.0	2.0 Low	CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Amber	Qt

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
Qtqt	before 5.12.0Not affected 5.12.0 through 6.8.8Affected 6.9.0 through 6.11.2Affected

References

https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-107157:vendor-advisory
https://codereview.qt-project.org/c/qt/qtbase/+/745719patch

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