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Fencer Intel
medium 4.3

CVE-2026-105924 json

NULL pointer dereference vulnerability in QCborValue to JSON conversion impacts Qt

published 10d ago modified 10d ago also EUVD-2026-113895

cvss
4.3
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

A NULL pointer dereference vulnerability in the Qt QCborValue to JSON conversion of the Qt Core module.

Patch / fix

  • qt Qt 6.12.1
  • qt6-base openSUSE Tumbleweed 6.12.0-2.1

opensuse advisories openSUSE-SU-2026:12384-1

Is CVE-2026-105924 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-105924 updated cvss 5.5

qt: qt: Denial of Service via NULL pointer dereference during QCborValue to JSON conversion

  • Red Hat Enterprise Linux 7 qt5-qtbase, qt5-qtbase-gui, qt5-rpm-macros, qt5-qtbase-odbc, qt5-qtbase-mysql, qt5-qtbase-common, +2 more Red Hat Enterprise Linux 8 qt5-qtbase, qt5-qtbase-gui, qt5-qtbase-odbc, qt5-qtbase-mysql, qt5-qtbase-common, qt5-qtbase-examples, +1 more Red Hat Enterprise Linux 9 qt5-qtbase, qt5-qtbase-gui, qt5-qtbase-odbc, qt5-qtbase-mysql, qt5-qtbase-common, qt5-qtbase-examples, +1 more Red Hat Enterprise Linux 10 qt6-qtbase Red Hat Hardened Images qt6 6.12.0-1.hum1, qt5 5.15.18-3.1.hum1
    affected: workaround, no fix available “Validate and sanitize untrusted CBOR input before passing it to QCborValue JSON conversion routines, or avoid converting untrusted CBOR data to JSON format.”
  • Red Hat Hardened Images qt6-qtbase 6.12.0-1.1.hum1, qt5-qtbase 5.15.18-6.2.hum1, qt6-qtbase-gui 6.12.0-1.1.hum1, qt5-qtbase-gui 5.15.18-6.2.hum1, qt5-qtbase-tds 5.15.18-6.2.hum1, qt6-qtbase-odbc 6.12.0-1.1.hum1, +11 more
    fixed: vendor fix “Validate and sanitize untrusted CBOR input before passing it to QCborValue JSON conversion routines, or avoid converting untrusted CBOR data to JSON format.” RHSA-2026:94640

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
10d ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 4.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green
CNA 4.0 4.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:L/U:Green

Affected products

  • qt Qt

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.