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-private-develUpgrade qt5-qtbaseUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-develUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-odbc | Jul 1, 2025 | Jun 2, 2025 |
| Debian | — | No solution existsUpgrade qtbase-opensource-srcUpgrade qt6-base | Jun 4, 2025 | Jun 2, 2025 |
| Oracle_linux | — | Upgrade qt6-qtbase-mysqlUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-examplesUpgrade qt6-qtbaseUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-develUpgrade qt6-qtbase-develUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-examplesUpgrade qt5-qtbase-guiUpgrade qt6-qtbase-postgresqlUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-odbcUpgrade qt6-qtbase-commonUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase | Jun 30, 2025 | Jun 2, 2025 |
| Redhat_linux | — | Upgrade qt6-qtbase-examplesUpgrade qt6-qtbase-develUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-postgresql-debuginfoNo solution existsUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt6-qtbase-postgresqlUpgrade qt5-qtbase-tests-debuginfoUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-debuginfoUpgrade qt6-qtbase-mysqlUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-odbcUpgrade qt6-qtbase-gui-debuginfoUpgrade qt5-qtbase-gui-debuginfoUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt6-qtbase-devel-debuginfoUpgrade qt5-qtbase-devel-debuginfoUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-tests-debuginfoUpgrade qt6-qtbaseUpgrade qt6-qtbase-examples-debuginfoUpgrade qt6-qtbase-debuginfoUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt5-qtbase-develUpgrade qt5-qtbase-debugsourceUpgrade qt5-qtbase-postgresqlUpgrade qt6-qtbase-commonUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-private-develUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-examples-debuginfoUpgrade qt5-qtbase-examplesUpgrade qt5-qtbaseUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-odbc | Jun 26, 2025 | Jun 2, 2025 |
| Rocky_linux | — | Upgrade qt6-qtbase-private-develUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-gui-debuginfoUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-examplesUpgrade qt5-qtbaseUpgrade qt6-qtbase-gui-debuginfoUpgrade qt5-qtbase-debugsourceUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt6-qtbase-debuginfoUpgrade qt5-qtbase-debuginfoUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-examples-debuginfoUpgrade qt6-qtbaseUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbase-guiUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-develUpgrade qt5-qtbase-examples-debuginfoUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-private-develUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-develUpgrade qt6-qtbase-mysqlUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-devel-debuginfoUpgrade qt5-qtbase-devel-debuginfoUpgrade qt5-qtbase-gui | Oct 6, 2025 | Oct 3, 2025 |
| Suse | — | Upgrade libqt5sql5-unixodbc-32bitUpgrade libQt6Widgets6Upgrade qt6-gui-private-develUpgrade qt6-base-develUpgrade qt6-platformtheme-gtk3Upgrade libqt4-sql-sqliteUpgrade libqt5sql-devel-32bitUpgrade qt6-base-examplesUpgrade libqt5bootstrap-devel-static-32bitUpgrade libqt5gui-private-headers-develUpgrade qt6-platformsupport-devel-staticUpgrade qt6-sql-unixODBCUpgrade libqt4-develUpgrade libqt5openglextensions-devel-static-32bitUpgrade libqt5platformsupport-private-headers-develUpgrade libqt5dbus5-32bitUpgrade libqt5openglextensions-devel-staticUpgrade libqt5sql5-mysql-32bitUpgrade libqt5test5Upgrade libqt5printsupport5-32bitUpgrade qt6-exampleicons-devel-staticUpgrade libqt5network-private-headers-develUpgrade libqt5-qtbase-examples-32bitUpgrade libqt5-qtbase-common-develUpgrade qt6-dbus-private-develUpgrade qt6-opengl-private-develUpgrade qt6-xml-private-develUpgrade libqt5platformsupport-devel-staticUpgrade libqt5dbus5Upgrade libqt5gui5-32bitUpgrade libqt4-devel-docUpgrade libqt5sql5-mysqlUpgrade libqt5xml-develUpgrade libqt5sql-develUpgrade libqt5test5-32bitUpgrade libqt5-qtbase-examplesUpgrade libqt5network-devel-32bitUpgrade libqt5widgets5Upgrade libqt5xml5-32bitUpgrade libqt5xml5Upgrade libqt5xml-devel-32bitUpgrade libQt6Network6Upgrade libQt6Sql6Upgrade qt6-sql-mysqlUpgrade libqt4-qt3support-32bitUpgrade libqt5widgets-devel-32bitUpgrade libqt5sql5-32bitUpgrade libqt5-qtbase-private-headers-develUpgrade libqt5opengl5-32bitUpgrade libqt5-qtbase-develUpgrade libqt5test-develUpgrade qt6-xml-develUpgrade libqt4-sql-32bitUpgrade libQt6Xml6Upgrade libqt4-devel-doc-dataUpgrade libQt6OpenGL6Upgrade qt6-network-develUpgrade libQt6DBus6Upgrade qt6-test-private-develUpgrade libqt4-qt3supportUpgrade libqt5sql5-sqliteUpgrade libqt5widgets-develUpgrade qt6-base-docs-qchUpgrade libqt5-qtbase-platformtheme-xdgdesktopportalUpgrade libqt5dbus-private-headers-develUpgrade libqt5dbus-develUpgrade qt6-kmssupport-private-develUpgrade qt6-dbus-develUpgrade qt6-printsupport-cupsUpgrade qt6-openglwidgets-develUpgrade libqt5opengl-devel-32bitUpgrade libqt5sql-private-headers-develUpgrade qt6-gui-develUpgrade libqt5network5-32bitUpgrade libqt5sql5-unixodbcUpgrade qt6-base-private-develUpgrade libqt5platformheaders-develUpgrade libqt5concurrent-develUpgrade qt6-network-tlsUpgrade qt6-core-private-develUpgrade qt6-test-develUpgrade qt6-sql-postgresqlUpgrade qt6-concurrent-develUpgrade qt6-base-common-develUpgrade libqt5concurrent5Upgrade libqt4-x11Upgrade libqt5opengl5Upgrade libqt5sql5Upgrade libqt5printsupport-private-headers-develUpgrade libqt5opengl-develUpgrade libqt5kmssupport-devel-staticUpgrade libqt5core-devel-32bitUpgrade qt6-docs-commonUpgrade qt6-opengl-develUpgrade qt4-x11-toolsUpgrade libqt5widgets5-32bitUpgrade libqt5sql5-postgresqlUpgrade libqt5gui-develUpgrade libqt5core-private-headers-develUpgrade libqt5concurrent5-32bitUpgrade qt6-sql-sqliteUpgrade libQt6PrintSupport6Upgrade libqt4-private-headers-develUpgrade libqt4-x11-32bitUpgrade libqt5test-devel-32bitUpgrade libqt5concurrent-devel-32bitUpgrade libqt5printsupport5Upgrade libqt5core-develUpgrade libqt5-qtbase-platformtheme-gtk3Upgrade libqt4-sql-mysqlUpgrade qt6-printsupport-develUpgrade qt6-platformtheme-xdgdesktopportalUpgrade qt6-kmssupport-devel-staticUpgrade libqt5network-develUpgrade libqt5core5Upgrade libqt4-sqlUpgrade libqt5bootstrap-devel-staticUpgrade libqt5network5Upgrade qt6-platformsupport-private-develUpgrade qt6-sql-develUpgrade qt6-networkinformation-nmUpgrade qt6-networkinformation-glibUpgrade libqt5printsupport-devel-32bitUpgrade libqt5printsupport-develUpgrade libqt5gui-devel-32bitUpgrade libqt5core5-32bitUpgrade qt6-sql-private-develUpgrade qt6-printsupport-private-develUpgrade libQt6Test6Upgrade libQt6OpenGLWidgets6Upgrade libQt6Gui6Upgrade libQt6Core6Upgrade qt6-core-develUpgrade qt6-base-docs-htmlUpgrade libqt5test-private-headers-develUpgrade libqt5platformsupport-devel-static-32bitUpgrade libqt5kmssupport-private-headers-develUpgrade libqt5gui5Upgrade qt6-widgets-private-develUpgrade qt6-widgets-develUpgrade libqt5sql5-postgresql-32bitUpgrade libQt6Concurrent6Upgrade libqt5opengl-private-headers-develUpgrade libqt5widgets-private-headers-develUpgrade qt6-network-private-develUpgrade libqt5sql5-sqlite-32bitUpgrade libqt5dbus-devel-32bitUpgrade libqt4-32bitUpgrade libqt4 | Aug 26, 2025 | Jun 26, 2025 |
| Ubuntu | — | No solution exists | Jul 25, 2025 | Jun 2, 2025 |
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