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-postgresqlUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-develUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-staticUpgrade qt5-qtbaseUpgrade qt5-qtbase-private-devel | Jul 1, 2025 | Jun 2, 2025 |
| Debian | — | Upgrade qtbase-opensource-srcUpgrade qt6-base | Jun 4, 2025 | Jun 2, 2025 |
| Oracle_linux | — | Upgrade qt5-qtbase-guiUpgrade qt6-qtbase-postgresqlUpgrade qt5-qtbaseUpgrade qt5-qtbase-odbcUpgrade qt6-qtbase-private-develUpgrade qt6-qtbase-commonUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbaseUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-develUpgrade qt5-qtbase-private-develUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-develUpgrade qt6-qtbase-odbcUpgrade qt6-qtbase-static | Jun 30, 2025 | Jun 2, 2025 |
| Redhat_linux | — | Upgrade qt5-qtbase-devel-debuginfoUpgrade qt5-qtbase-debugsourceUpgrade qt5-qtbase-develUpgrade qt6-qtbase-devel-debuginfoUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt5-qtbase-examplesUpgrade qt6-qtbase-commonUpgrade qt6-qtbaseUpgrade qt5-qtbaseUpgrade qt5-qtbase-examples-debuginfoUpgrade qt5-qtbase-private-develUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-postgresqlUpgrade qt6-qtbase-examples-debuginfoUpgrade qt6-qtbase-debugsourceUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-debuginfoUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-tests-debuginfoNo solution existsUpgrade qt5-qtbase-odbcUpgrade qt6-qtbase-develUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbase-gui-debuginfoUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-guiUpgrade qt6-qtbase-examplesUpgrade qt5-qtbase-gui-debuginfoUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-debuginfoUpgrade qt5-qtbase-tests-debuginfo | Jun 26, 2025 | Jun 2, 2025 |
| Rocky_linux | — | Upgrade qt6-qtbase-develUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt6-qtbase-devel-debuginfoUpgrade qt5-qtbase-private-develUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-guiUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-debugsourceUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-mysqlUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt5-qtbase-devel-debuginfoUpgrade qt5-qtbase-examples-debuginfoUpgrade qt5-qtbase-develUpgrade qt6-qtbase-guiUpgrade qt6-qtbaseUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbase-examples-debuginfoUpgrade qt5-qtbase-gui-debuginfoUpgrade qt6-qtbase-private-develUpgrade qt6-qtbase-gui-debuginfoUpgrade qt5-qtbase-debugsourceUpgrade qt5-qtbase-odbcUpgrade qt5-qtbaseUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-debuginfoUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-debuginfo | Oct 6, 2025 | Oct 3, 2025 |
| Suse | — | Upgrade qt6-network-develUpgrade qt6-exampleicons-devel-staticUpgrade qt6-dbus-develUpgrade libqt4-sql-32bitUpgrade qt6-base-docs-qchUpgrade libQt6Sql6Upgrade qt6-opengl-private-develUpgrade qt6-sql-mysqlUpgrade libqt4-qt3support-32bitUpgrade libqt4-develUpgrade qt6-xml-private-develUpgrade libqt5gui5-32bitUpgrade libqt5xml5Upgrade libqt5xml-develUpgrade qt6-test-private-develUpgrade libqt4-devel-docUpgrade libqt5dbus5Upgrade libqt5xml-devel-32bitUpgrade qt6-xml-develUpgrade qt6-printsupport-cupsUpgrade libqt5xml5-32bitUpgrade libqt4-sql-sqliteUpgrade libqt5printsupport5-32bitUpgrade libqt5sql-devel-32bitUpgrade libqt5-qtbase-common-develUpgrade libqt5-qtbase-develUpgrade libqt5widgets-devel-32bitUpgrade libqt5widgets-develUpgrade libqt5sql-develUpgrade libqt4-qt3supportUpgrade libqt5sql5-32bitUpgrade libqt5sql5-sqliteUpgrade libQt6Network6Upgrade libQt6DBus6Upgrade libQt6Xml6Upgrade libqt5test-develUpgrade libqt4-devel-doc-dataUpgrade libqt5-qtbase-private-headers-develUpgrade libqt5opengl5-32bitUpgrade libQt6OpenGL6Upgrade qt6-dbus-private-develUpgrade qt6-sql-unixODBCUpgrade libqt5bootstrap-devel-static-32bitUpgrade libqt5gui-private-headers-develUpgrade libqt5sql5-mysqlUpgrade libqt5network-private-headers-develUpgrade libqt5-qtbase-examples-32bitUpgrade libqt5openglextensions-devel-staticUpgrade libqt5test5Upgrade libqt5platformsupport-devel-staticUpgrade qt6-platformsupport-devel-staticUpgrade libqt5dbus5-32bitUpgrade libqt5sql5-mysql-32bitUpgrade qt6-kmssupport-private-develUpgrade libqt5-qtbase-platformtheme-xdgdesktopportalUpgrade qt6-openglwidgets-develUpgrade libqt5dbus-develUpgrade libqt5opengl-devel-32bitUpgrade libqt5sql-private-headers-develUpgrade libqt5dbus-private-headers-develUpgrade libqt5network-devel-32bitUpgrade libqt5openglextensions-devel-static-32bitUpgrade qt6-platformtheme-gtk3Upgrade qt6-gui-private-develUpgrade libQt6Widgets6Upgrade qt6-base-develUpgrade qt6-base-examplesUpgrade libqt5platformsupport-private-headers-develUpgrade libqt5test5-32bitUpgrade libqt5-qtbase-examplesUpgrade libqt5widgets5Upgrade libqt5sql5-unixodbc-32bitUpgrade qt6-gui-develUpgrade libQt6Concurrent6Upgrade libqt4-x11-32bitUpgrade libqt5sql5-postgresqlUpgrade qt6-platformsupport-private-develUpgrade qt6-widgets-develUpgrade libqt5concurrent5-32bitUpgrade libqt4-private-headers-develUpgrade qt6-sql-sqliteUpgrade qt6-opengl-develUpgrade qt6-docs-commonUpgrade qt4-x11-toolsUpgrade libqt5gui-develUpgrade libqt5core-private-headers-develUpgrade libqt5widgets5-32bitUpgrade libqt5-qtbase-platformtheme-gtk3Upgrade libqt5sql5-unixodbcUpgrade libqt5sql5Upgrade libqt5printsupport-private-headers-develUpgrade libqt5opengl-develUpgrade libqt5kmssupport-devel-staticUpgrade libqt5core-devel-32bitUpgrade libQt6PrintSupport6Upgrade qt6-printsupport-private-develUpgrade libQt6Core6Upgrade qt6-sql-private-develUpgrade libQt6Test6Upgrade libQt6OpenGLWidgets6Upgrade libQt6Gui6Upgrade libqt5printsupport-devel-32bitUpgrade libqt5printsupport-develUpgrade libqt5gui-devel-32bitUpgrade libqt5core5-32bitUpgrade libqt4-sql-mysqlUpgrade qt6-kmssupport-devel-staticUpgrade libqt5core5Upgrade libqt5core-develUpgrade libqt5printsupport5Upgrade qt6-printsupport-develUpgrade qt6-platformtheme-xdgdesktopportalUpgrade libqt5network-develUpgrade libqt5network5-32bitUpgrade qt6-networkinformation-nmUpgrade qt6-base-docs-htmlUpgrade qt6-widgets-private-develUpgrade qt6-network-private-develUpgrade libqt5sql5-sqlite-32bitUpgrade qt6-network-tlsUpgrade libqt5dbus-devel-32bitUpgrade libqt4-32bitUpgrade libqt4Upgrade libqt5concurrent5Upgrade qt6-base-private-develUpgrade libqt5test-devel-32bitUpgrade libqt5platformheaders-develUpgrade libqt5network5Upgrade libqt5concurrent-devel-32bitUpgrade libqt5concurrent-develUpgrade libqt5bootstrap-devel-staticUpgrade libqt4-sqlUpgrade qt6-core-private-develUpgrade qt6-concurrent-develUpgrade qt6-base-common-develUpgrade libqt4-x11Upgrade qt6-test-develUpgrade qt6-sql-postgresqlUpgrade libqt5widgets-private-headers-develUpgrade qt6-networkinformation-glibUpgrade qt6-core-develUpgrade libqt5test-private-headers-develUpgrade libqt5sql5-postgresql-32bitUpgrade libqt5platformsupport-devel-static-32bitUpgrade libqt5opengl-private-headers-develUpgrade libqt5kmssupport-private-headers-develUpgrade libqt5gui5Upgrade qt6-sql-develUpgrade libqt5opengl5 | Aug 26, 2025 | Jun 26, 2025 |
| Ubuntu | — | No solution exists | Jul 25, 2025 | Jun 2, 2025 |
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