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-odbcUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-develUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-staticUpgrade qt5-qtbase | Jul 1, 2025 | Jun 2, 2025 |
| Debian | — | No solution existsUpgrade qt6-baseUpgrade qtbase-opensource-src | Jun 4, 2025 | Jun 2, 2025 |
| Oracle_linux | — | Upgrade qt5-qtbase-mysqlUpgrade qt5-qtbaseUpgrade qt6-qtbase-commonUpgrade qt5-qtbase-postgresqlUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-guiUpgrade qt6-qtbase-postgresqlUpgrade qt5-qtbase-odbcUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-mysqlUpgrade qt6-qtbase-develUpgrade qt6-qtbaseUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-develUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-examples | Jun 30, 2025 | Jun 2, 2025 |
| Redhat_linux | — | Upgrade qt6-qtbase-mysql-debuginfoUpgrade qt5-qtbase-develUpgrade qt5-qtbase-debugsourceUpgrade qt5-qtbase-examples-debuginfoUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt6-qtbase-commonUpgrade qt6-qtbase-devel-debuginfoUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-tests-debuginfoUpgrade qt6-qtbase-debuginfoUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-devel-debuginfoUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase-private-develUpgrade qt6-qtbase-examples-debuginfoUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-guiUpgrade qt5-qtbaseUpgrade qt5-qtbase-examplesUpgrade qt6-qtbase-staticUpgrade qt6-qtbaseUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt6-qtbase-gui-debuginfoUpgrade qt6-qtbase-private-develUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-guiNo solution existsUpgrade qt6-qtbase-develUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-gui-debuginfoUpgrade qt5-qtbase-debuginfoUpgrade qt5-qtbase-tests-debuginfoUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-postgresql | Jun 26, 2025 | Jun 2, 2025 |
| Rocky_linux | — | Upgrade qt5-qtbase-postgresqlUpgrade qt6-qtbase-debuginfoUpgrade qt5-qtbase-debuginfoUpgrade qt5-qtbase-debugsourceUpgrade qt6-qtbase-gui-debuginfoUpgrade qt5-qtbase-gui-debuginfoUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-examplesUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt5-qtbase-odbcUpgrade qt6-qtbase-private-develUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbaseUpgrade qt6-qtbase-develUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt6-qtbaseUpgrade qt6-qtbase-odbcUpgrade qt6-qtbase-examples-debuginfoUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-develUpgrade qt5-qtbase-examples-debuginfoUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-devel-debuginfoUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-devel-debuginfo | Oct 6, 2025 | Oct 3, 2025 |
| Suse | — | Upgrade qt6-gui-develUpgrade qt6-openglwidgets-develUpgrade libqt5sql5-32bitUpgrade libqt5dbus-private-headers-develUpgrade qt6-xml-develUpgrade libqt5-qtbase-platformtheme-xdgdesktopportalUpgrade libqt5opengl-devel-32bitUpgrade qt6-dbus-develUpgrade qt6-base-docs-qchUpgrade qt6-printsupport-cupsUpgrade libqt5sql5-mysql-32bitUpgrade libqt5-qtbase-common-develUpgrade libqt5network-devel-32bitUpgrade libqt5openglextensions-devel-static-32bitUpgrade qt6-sql-mysqlUpgrade libqt4-qt3support-32bitUpgrade libqt5platformsupport-private-headers-develUpgrade libqt5sql-private-headers-develUpgrade qt6-test-private-develUpgrade libqt5dbus5-32bitUpgrade libqt5sql5-mysqlUpgrade libqt5-qtbase-examples-32bitUpgrade qt6-opengl-private-develUpgrade libqt5sql-develUpgrade libqt5openglextensions-devel-staticUpgrade libqt5platformsupport-devel-staticUpgrade libqt5test5Upgrade libqt5test5-32bitUpgrade libqt5-qtbase-examplesUpgrade libqt5xml-develUpgrade libqt5xml-devel-32bitUpgrade libqt5-qtbase-develUpgrade libqt5xml5-32bitUpgrade libQt6Sql6Upgrade qt6-network-develUpgrade libqt4-devel-doc-dataUpgrade libqt4-sql-32bitUpgrade libqt5-qtbase-private-headers-develUpgrade libqt5opengl5-32bitUpgrade libqt5test-develUpgrade libQt6Xml6Upgrade libQt6DBus6Upgrade libqt5widgets-devel-32bitUpgrade libQt6OpenGL6Upgrade libqt4-qt3supportUpgrade qt6-platformtheme-gtk3Upgrade qt6-gui-private-develUpgrade libqt5network-private-headers-develUpgrade libqt4-sql-sqliteUpgrade qt6-sql-unixODBCUpgrade qt6-base-examplesUpgrade libqt5bootstrap-devel-static-32bitUpgrade libqt5gui-private-headers-develUpgrade qt6-exampleicons-devel-staticUpgrade qt6-platformsupport-devel-staticUpgrade libqt5printsupport5-32bitUpgrade libqt5sql-devel-32bitUpgrade libqt4-devel-docUpgrade libqt5sql5-unixodbc-32bitUpgrade libqt5widgets5Upgrade libQt6Widgets6Upgrade libqt5widgets-develUpgrade libqt5sql5-sqliteUpgrade libqt5dbus5Upgrade qt6-base-develUpgrade libqt4-develUpgrade libqt5dbus-develUpgrade qt6-kmssupport-private-develUpgrade libqt5gui5-32bitUpgrade qt6-xml-private-develUpgrade libqt5xml5Upgrade qt6-dbus-private-develUpgrade libQt6Network6Upgrade libqt5printsupport-private-headers-develUpgrade libqt5core-develUpgrade libqt5network5-32bitUpgrade libqt5platformsupport-devel-static-32bitUpgrade libqt5kmssupport-private-headers-develUpgrade libqt5sql5-unixodbcUpgrade libqt5sql5Upgrade libqt5core-devel-32bitUpgrade libqt4Upgrade libqt5opengl-develUpgrade libqt5kmssupport-devel-staticUpgrade libqt4-32bitUpgrade libqt5widgets-private-headers-develUpgrade qt6-platformtheme-xdgdesktopportalUpgrade libqt4-private-headers-develUpgrade qt6-opengl-develUpgrade qt6-docs-commonUpgrade qt4-x11-toolsUpgrade libqt5sql5-postgresqlUpgrade libqt5core-private-headers-develUpgrade libqt5concurrent5-32bitUpgrade libqt4-x11-32bitUpgrade libqt5widgets5-32bitUpgrade libqt5gui-develUpgrade qt6-sql-sqliteUpgrade qt6-test-develUpgrade qt6-concurrent-develUpgrade qt6-base-common-develUpgrade libqt5opengl5Upgrade libqt5concurrent5Upgrade libqt4-x11Upgrade qt6-sql-postgresqlUpgrade qt6-platformsupport-private-develUpgrade libqt5concurrent-develUpgrade libqt4-sqlUpgrade qt6-base-private-develUpgrade libqt5test-devel-32bitUpgrade libqt5platformheaders-develUpgrade libqt5network5Upgrade libqt5concurrent-devel-32bitUpgrade libqt5printsupport5Upgrade libqt5-qtbase-platformtheme-gtk3Upgrade libqt4-sql-mysqlUpgrade qt6-printsupport-develUpgrade qt6-kmssupport-devel-staticUpgrade libqt5network-develUpgrade libqt5core5Upgrade qt6-core-private-develUpgrade libqt5opengl-private-headers-develUpgrade libqt5gui5Upgrade qt6-widgets-private-develUpgrade qt6-widgets-develUpgrade qt6-sql-develUpgrade qt6-networkinformation-nmUpgrade qt6-networkinformation-glibUpgrade qt6-core-develUpgrade qt6-base-docs-htmlUpgrade libqt5test-private-headers-develUpgrade libqt5sql5-postgresql-32bitUpgrade libqt5bootstrap-devel-staticUpgrade qt6-network-tlsUpgrade qt6-network-private-develUpgrade libqt5sql5-sqlite-32bitUpgrade libqt5dbus-devel-32bitUpgrade qt6-sql-private-develUpgrade qt6-printsupport-private-develUpgrade libQt6Test6Upgrade libQt6Gui6Upgrade libQt6Core6Upgrade libqt5printsupport-develUpgrade libqt5gui-devel-32bitUpgrade libqt5core5-32bitUpgrade libQt6OpenGLWidgets6Upgrade libQt6Concurrent6Upgrade libqt5printsupport-devel-32bitUpgrade libQt6PrintSupport6 | Aug 26, 2025 | Jun 26, 2025 |
| Ubuntu | — | No solution exists | Jul 25, 2025 | Jun 2, 2025 |
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