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TI-2026-83787 Aliases CVE-2026-100140GHSA-7695-pqx4-vc24

Integer overflow in Qt5Compat XML parsing in Qt

Priority LOW 10CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

Qt from 6.0.0 before 6.8.9, from 6.9.0 before 6.11.2, and from 6.12.0 onward is affected. An integer overflow in the Qt5Compat XML parsing code (QXmlSimpleReader) lets calculated sizes wrap around (CWE-190). A local attacker without privileges can trigger it when a user processes crafted XML, which mainly affects availability and slightly affects integrity.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00167 5th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
qtqt6.0.0 – 6.8.9; 6.9.0 – 6.11.2; 6.12.0—No fix listedCNA
  • qt Vendorqt Affected 6.0.0 – 6.8.9; 6.9.0 – 6.11.2; 6.12.0 Fixed in — No fix listed CNA

CPE names CNA · 2

CPEVersionsRoleVendor
cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*——qt
cpe:2.3:a:qt:qt5compat:*:*:*:*:*:*:*:*——qt
  • cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:* Versions — — ·qt
  • cpe:2.3:a:qt:qt5compat:*:*:*:*:*:*:*:* Versions — — ·qt

Remediation

The sources list no fixed version for Qt. Red Hat rates this Low and lists Red Hat Enterprise Linux 10 and Red Hat Hardened Images as affected, with no plan available.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesAffectedNo fix yet

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-100140
  2. 2026-11-02 Alias added: GHSA-7695-pqx4-vc24
  3. 2026-11-02 CISA SSVC decision points changed
  4. 2026-11-02 Affected versions changed · Red Hat
  5. 2026-11-03 Affected versions changed · Red Hat
  6. 2026-11-03 CVSS score added · Red Hat

References

Patch 4

Advisory 1

  • TI-2024-23902 QAbstractOAuth in Qt Network Authorization in Qt before 5.15.17, 6.x before 6.2.13, 6.3.x… CVSS 3.1CRITICAL 9.8
  • TI-2022-21359 Heap-based buffer overflow in Qt CVSS 3.1HIGH 8.8
  • TI-2022-19524 Integer overflow in Qt CVSS 3.1HIGH 8.8
  • TI-2023-18997 In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can… CVSS 3.1HIGH 7.5
  • TI-2021-09305 Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0… CVSS 3.1MEDIUM 5.5
  • TI-2023-28356 An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before… CVSS 3.1CRITICAL 9.8
See all 106 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences