An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.
CVE-2026-100140
An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.
Assessment
- CVSS
- 1.9 (v4.0)
- Severity
- Low
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 2 November 2026
- Last updated
- 2 November 2026
- Assigner
- Qt
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green
At the source
References
- https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-100140:
- https://codereview.qt-project.org/c/qt/qt5compat/+/768900
- https://codereview.qt-project.org/c/qt/qt5compat/+/764751
- https://codereview.qt-project.org/c/qt/qt5compat/+/768901
- https://codereview.qt-project.org/c/qt/qt5compat/+/768902
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