An issue was found in the private API function qDecodeDataUrl() in QtCore, which is used in QTextDocument and QNetworkReply, and, potentially, in user code.
If the function was called with malformed data, for example, an URL that contained a "charset" parameter that lacked a value (such as "data:charset,"), and Qt was built with assertions enabled, then it would hit an assertion, resulting in a denial of service (abort).
This impacts Qt up to 5.15.18, 6.0.0->6.5.8, 6.6.0->6.8.3 and 6.9.0. This has been fixed in 5.15.19, 6.5.9, 6.8.4 and 6.9.1.
CVSS Details
- CVSS 4.0 Base Score: 8.4 (HIGH)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/E:X/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:M/U:Clear)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade qt5-qtbase-staticUpgrade qt5-qtbase-private-develUpgrade qt5-qtbaseUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-develUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase-gui | Jul 1, 2025 | Jun 2, 2025 |
| Debian | — | Upgrade qtbase-opensource-srcUpgrade qt6-baseNo solution exists | Jun 4, 2025 | Jun 2, 2025 |
| Oracle_linux | — | Upgrade qt6-qtbase-odbcUpgrade qt6-qtbaseUpgrade qt6-qtbase-mysqlUpgrade qt6-qtbase-develUpgrade qt6-qtbase-staticUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-develUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-examplesUpgrade qt6-qtbase-guiUpgrade qt6-qtbase-examplesUpgrade qt5-qtbase-odbcUpgrade qt5-qtbaseUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-commonUpgrade qt5-qtbase-postgresql | Jun 30, 2025 | Jun 2, 2025 |
| Redhat_linux | — | Upgrade qt6-qtbase-examplesUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-gui-debuginfoUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-debuginfoNo solution existsUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-tests-debuginfoUpgrade qt6-qtbase-develUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-guiUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt5-qtbase-gui-debuginfoUpgrade qt6-qtbase-postgresqlUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-debuginfoUpgrade qt5-qtbase-devel-debuginfoUpgrade qt5-qtbase-postgresqlUpgrade qt6-qtbase-examples-debuginfoUpgrade qt6-qtbase-guiUpgrade qt6-qtbase-tests-debuginfoUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-develUpgrade qt5-qtbase-debugsourceUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt6-qtbase-devel-debuginfoUpgrade qt5-qtbase-private-develUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt5-qtbase-examplesUpgrade qt5-qtbaseUpgrade qt5-qtbase-examples-debuginfoUpgrade qt6-qtbaseUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-commonUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt6-qtbase-odbc | Jun 26, 2025 | Jun 2, 2025 |
| Rocky_linux | — | Upgrade qt5-qtbaseUpgrade qt5-qtbase-gui-debuginfoUpgrade qt5-qtbase-examplesUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-postgresqlUpgrade qt6-qtbase-debuginfoUpgrade qt5-qtbase-debugsourceUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt6-qtbase-gui-debuginfoUpgrade qt5-qtbase-debuginfoUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-examples-debuginfoUpgrade qt5-qtbase-develUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbase-guiUpgrade qt6-qtbase-examples-debuginfoUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-odbcUpgrade qt6-qtbaseUpgrade qt6-qtbase-develUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-examplesUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-staticUpgrade qt5-qtbase-devel-debuginfoUpgrade qt6-qtbase-devel-debuginfo | Oct 6, 2025 | Oct 3, 2025 |
| Suse | — | Upgrade libQt6OpenGLWidgets6Upgrade qt6-sql-sqliteUpgrade libqt4-private-headers-develUpgrade libqt5gui-devel-32bitUpgrade libqt5printsupport-devel-32bitUpgrade libQt6Core6Upgrade libQt6Gui6Upgrade libqt4-x11-32bitUpgrade libqt5sql5-postgresqlUpgrade qt6-network-private-develUpgrade libqt4Upgrade qt6-network-tlsUpgrade libqt4-32bitUpgrade libqt5dbus-devel-32bitUpgrade libqt5sql5-sqlite-32bitUpgrade qt6-sql-private-develUpgrade qt6-docs-commonUpgrade libqt5concurrent5Upgrade libqt5network5-32bitUpgrade libqt5opengl5Upgrade qt4-x11-toolsUpgrade libqt5widgets-private-headers-develUpgrade qt6-base-common-develUpgrade libqt5test-private-headers-develUpgrade qt6-base-docs-htmlUpgrade qt6-core-develUpgrade libqt5kmssupport-private-headers-develUpgrade qt6-networkinformation-nmUpgrade qt6-platformsupport-private-develUpgrade qt6-sql-develUpgrade qt6-concurrent-develUpgrade qt6-core-private-develUpgrade qt6-widgets-develUpgrade libqt5gui5Upgrade qt6-widgets-private-develUpgrade qt6-networkinformation-glibUpgrade libqt5sql5-postgresql-32bitUpgrade libqt5opengl-private-headers-develUpgrade libqt5platformsupport-devel-static-32bitUpgrade qt6-sql-postgresqlUpgrade qt6-test-develUpgrade libqt4-x11Upgrade libqt5gui-develUpgrade libqt5widgets5-32bitUpgrade libqt5platformheaders-develUpgrade libqt5concurrent-devel-32bitUpgrade libqt5network5Upgrade libqt5test-devel-32bitUpgrade qt6-base-private-develUpgrade libqt4-sqlUpgrade libqt5concurrent-develUpgrade libqt5bootstrap-devel-staticUpgrade libQt6Concurrent6Upgrade qt6-opengl-develUpgrade libqt5printsupport-develUpgrade libqt5concurrent5-32bitUpgrade libqt5-qtbase-platformtheme-gtk3Upgrade libqt4-sql-mysqlUpgrade libqt5core-develUpgrade qt6-printsupport-develUpgrade libqt5core-private-headers-develUpgrade libqt5core5Upgrade libqt5network-develUpgrade libqt5printsupport5Upgrade libqt5sql5-unixodbcUpgrade libQt6PrintSupport6Upgrade qt6-printsupport-private-develUpgrade libqt5core5-32bitUpgrade libQt6Test6Upgrade libqt5core-devel-32bitUpgrade qt6-kmssupport-devel-staticUpgrade qt6-platformtheme-xdgdesktopportalUpgrade libqt5sql5Upgrade libqt5kmssupport-devel-staticUpgrade libqt5printsupport-private-headers-develUpgrade libqt5opengl-develUpgrade libQt6Network6Upgrade libqt5gui5-32bitUpgrade qt6-xml-private-develUpgrade libqt4-develUpgrade libqt5dbus5Upgrade qt6-dbus-private-develUpgrade libqt5xml5Upgrade libqt5sql-develUpgrade libqt5sql5-mysqlUpgrade libqt4-devel-docUpgrade libqt5xml-devel-32bitUpgrade libqt5widgets5Upgrade libqt4-qt3support-32bitUpgrade libqt5sql5-mysql-32bitUpgrade libqt5dbus5-32bitUpgrade libqt5platformsupport-devel-staticUpgrade libqt5openglextensions-devel-staticUpgrade libqt5test5Upgrade libqt5-qtbase-examples-32bitUpgrade qt6-network-develUpgrade qt6-openglwidgets-develUpgrade libqt5dbus-develUpgrade libqt5-qtbase-platformtheme-xdgdesktopportalUpgrade qt6-kmssupport-private-develUpgrade qt6-gui-develUpgrade libqt5sql-private-headers-develUpgrade libqt5opengl-devel-32bitUpgrade qt6-base-develUpgrade qt6-base-examplesUpgrade qt6-platformtheme-gtk3Upgrade qt6-gui-private-develUpgrade libQt6Widgets6Upgrade libqt5sql5-unixodbc-32bitUpgrade libqt5sql-devel-32bitUpgrade libqt5printsupport5-32bitUpgrade libqt4-sql-sqliteUpgrade libqt4-devel-doc-dataUpgrade libqt5test-develUpgrade libqt5opengl5-32bitUpgrade libqt5-qtbase-private-headers-develUpgrade libqt5-qtbase-develUpgrade libQt6DBus6Upgrade libqt5widgets-devel-32bitUpgrade libqt4-sql-32bitUpgrade libqt5dbus-private-headers-develUpgrade libQt6Xml6Upgrade libQt6OpenGL6Upgrade qt6-xml-develUpgrade libqt5bootstrap-devel-static-32bitUpgrade libqt5gui-private-headers-develUpgrade qt6-exampleicons-devel-staticUpgrade qt6-sql-unixODBCUpgrade qt6-platformsupport-devel-staticUpgrade libqt5network-private-headers-develUpgrade qt6-dbus-develUpgrade qt6-base-docs-qchUpgrade libqt4-qt3supportUpgrade qt6-test-private-develUpgrade qt6-printsupport-cupsUpgrade libqt5widgets-develUpgrade libqt5sql5-sqliteUpgrade libqt5sql5-32bitUpgrade libqt5network-devel-32bitUpgrade libqt5openglextensions-devel-static-32bitUpgrade libqt5xml5-32bitUpgrade libqt5xml-develUpgrade libqt5test5-32bitUpgrade libqt5platformsupport-private-headers-develUpgrade libqt5-qtbase-examplesUpgrade libqt5-qtbase-common-develUpgrade qt6-sql-mysqlUpgrade qt6-opengl-private-develUpgrade libQt6Sql6 | Aug 26, 2025 | Jun 26, 2025 |
| Ubuntu | — | No solution exists | Jul 25, 2025 | Jun 2, 2025 |
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