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-qtbaseUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-develUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-postgresql | 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-develUpgrade qt5-qtbase-examplesUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-commonUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-mysqlUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-odbcUpgrade qt6-qtbaseUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-develUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbaseUpgrade qt6-qtbase-commonUpgrade qt6-qtbase-postgresqlUpgrade qt5-qtbase-guiUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-private-devel | Jun 30, 2025 | Jun 2, 2025 |
| Redhat_linux | — | Upgrade qt5-qtbase-mysql-debuginfoUpgrade qt5-qtbase-mysqlUpgrade qt6-qtbase-gui-debuginfoNo solution existsUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-debuginfoUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-guiUpgrade qt6-qtbase-develUpgrade qt5-qtbase-gui-debuginfoUpgrade qt5-qtbase-odbcUpgrade qt5-qtbase-commonUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-tests-debuginfoUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt5-qtbase-debugsourceUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-examples-debuginfoUpgrade qt6-qtbase-examples-debuginfoUpgrade qt5-qtbase-staticUpgrade qt6-qtbase-tests-debuginfoUpgrade qt6-qtbase-guiUpgrade qt5-qtbase-develUpgrade qt5-qtbase-devel-debuginfoUpgrade qt6-qtbase-debuginfoUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt6-qtbase-commonUpgrade qt6-qtbaseUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-staticUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt6-qtbase-devel-debuginfoUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-postgresqlUpgrade qt5-qtbase | Jun 26, 2025 | Jun 2, 2025 |
| Rocky_linux | — | Upgrade qt5-qtbaseUpgrade qt6-qtbase-mysql-debuginfoUpgrade qt5-qtbase-examplesUpgrade qt5-qtbase-postgresqlUpgrade qt6-qtbase-debuginfoUpgrade qt5-qtbase-debuginfoUpgrade qt5-qtbase-odbcUpgrade qt6-qtbase-gui-debuginfoUpgrade qt5-qtbase-debugsourceUpgrade qt6-qtbase-private-develUpgrade qt5-qtbase-gui-debuginfoUpgrade qt6-qtbase-postgresql-debuginfoUpgrade qt5-qtbase-staticUpgrade qt5-qtbase-mysqlUpgrade qt5-qtbase-devel-debuginfoUpgrade qt6-qtbase-mysqlUpgrade qt5-qtbase-postgresql-debuginfoUpgrade qt6-qtbase-develUpgrade qt5-qtbase-odbc-debuginfoUpgrade qt6-qtbase-odbcUpgrade qt5-qtbase-guiUpgrade qt6-qtbase-devel-debuginfoUpgrade qt6-qtbase-debugsourceUpgrade qt6-qtbase-odbc-debuginfoUpgrade qt5-qtbase-develUpgrade qt5-qtbase-examples-debuginfoUpgrade qt6-qtbase-postgresqlUpgrade qt6-qtbaseUpgrade qt6-qtbase-guiUpgrade qt6-qtbase-examples-debuginfoUpgrade qt5-qtbase-private-develUpgrade qt5-qtbase-mysql-debuginfoUpgrade qt6-qtbase-examplesUpgrade qt6-qtbase-static | Oct 6, 2025 | Oct 3, 2025 |
| Suse | — | Upgrade libqt5concurrent-develUpgrade qt6-base-private-develUpgrade libqt5bootstrap-devel-staticUpgrade libqt4-sqlUpgrade libqt5concurrent-devel-32bitUpgrade libqt5network5Upgrade libqt5platformheaders-develUpgrade libqt5test-devel-32bitUpgrade libqt5gui5Upgrade libqt5kmssupport-private-headers-develUpgrade qt6-sql-postgresqlUpgrade qt6-platformsupport-private-develUpgrade qt6-base-common-develUpgrade libqt5platformsupport-devel-static-32bitUpgrade libqt5test-private-headers-develUpgrade qt6-core-develUpgrade qt6-widgets-develUpgrade libqt5opengl-private-headers-develUpgrade qt6-networkinformation-nmUpgrade libqt5sql5-postgresql-32bitUpgrade qt6-test-develUpgrade libqt4-x11Upgrade libqt5concurrent5Upgrade libqt5core-private-headers-develUpgrade qt6-sql-develUpgrade qt6-widgets-private-develUpgrade qt6-base-docs-htmlUpgrade libqt5network5-32bitUpgrade qt6-networkinformation-glibUpgrade libqt5opengl5Upgrade libqt5widgets-private-headers-develUpgrade qt6-concurrent-develUpgrade qt6-core-private-develUpgrade libqt5sql5-postgresqlUpgrade libqt5gui-develUpgrade qt6-sql-sqliteUpgrade libqt4-private-headers-develUpgrade libqt5concurrent5-32bitUpgrade libqt5widgets5-32bitUpgrade qt4-x11-toolsUpgrade qt6-opengl-develUpgrade qt6-docs-commonUpgrade qt6-printsupport-develUpgrade libqt5printsupport5Upgrade libqt5core-develUpgrade libqt5core5Upgrade libqt5network-develUpgrade qt6-kmssupport-devel-staticUpgrade qt6-platformtheme-xdgdesktopportalUpgrade libqt4-x11-32bitUpgrade libqt4-sql-mysqlUpgrade libqt4Upgrade libqt5-qtbase-platformtheme-gtk3Upgrade libqt5dbus-devel-32bitUpgrade libqt5sql5-sqlite-32bitUpgrade qt6-network-private-develUpgrade libqt4-32bitUpgrade qt6-network-tlsUpgrade libQt6Gui6Upgrade qt6-printsupport-private-develUpgrade qt6-sql-private-develUpgrade libqt5printsupport-develUpgrade libQt6Concurrent6Upgrade libQt6PrintSupport6Upgrade libqt5printsupport-devel-32bitUpgrade libQt6Core6Upgrade libqt5gui-devel-32bitUpgrade libQt6OpenGLWidgets6Upgrade libqt5core5-32bitUpgrade libQt6Test6Upgrade libqt5sql5-unixodbcUpgrade libqt5kmssupport-devel-staticUpgrade libqt5core-devel-32bitUpgrade libqt5sql5Upgrade libqt5opengl-develUpgrade libqt5printsupport-private-headers-develUpgrade qt6-test-private-develUpgrade qt6-printsupport-cupsUpgrade libqt5sql-private-headers-develUpgrade qt6-gui-private-develUpgrade libqt5sql5-unixodbc-32bitUpgrade qt6-platformtheme-gtk3Upgrade qt6-base-docs-qchUpgrade libqt5widgets-develUpgrade libqt5sql5-sqliteUpgrade qt6-xml-develUpgrade libqt5sql5-32bitUpgrade libqt4-qt3supportUpgrade qt6-dbus-develUpgrade libqt5sql-develUpgrade libqt5openglextensions-devel-static-32bitUpgrade libqt5network-devel-32bitUpgrade libqt5-qtbase-examplesUpgrade libqt5-qtbase-common-develUpgrade libqt4-qt3support-32bitUpgrade qt6-sql-mysqlUpgrade qt6-opengl-private-develUpgrade libQt6Sql6Upgrade libqt5platformsupport-devel-staticUpgrade libqt5openglextensions-devel-staticUpgrade libqt5dbus5-32bitUpgrade libqt5-qtbase-examples-32bitUpgrade libqt5test5Upgrade libqt5platformsupport-private-headers-develUpgrade libqt5xml5-32bitUpgrade libqt5xml-develUpgrade libqt5test5-32bitUpgrade libqt5sql5-mysqlUpgrade libqt5xml-devel-32bitUpgrade libqt5sql5-mysql-32bitUpgrade qt6-openglwidgets-develUpgrade qt6-kmssupport-private-develUpgrade qt6-gui-develUpgrade libqt5opengl-devel-32bitUpgrade libqt5dbus-private-headers-develUpgrade qt6-dbus-private-develUpgrade qt6-xml-private-develUpgrade libqt5dbus5Upgrade libqt4-devel-docUpgrade libQt6Network6Upgrade libqt5xml5Upgrade libqt5widgets5Upgrade libqt5gui5-32bitUpgrade libqt5-qtbase-platformtheme-xdgdesktopportalUpgrade libqt5dbus-develUpgrade libqt5-qtbase-develUpgrade libQt6OpenGL6Upgrade libQt6DBus6Upgrade libqt5widgets-devel-32bitUpgrade libqt5test-develUpgrade libqt5opengl5-32bitUpgrade libqt5-qtbase-private-headers-develUpgrade libqt4-sql-32bitUpgrade libQt6Xml6Upgrade qt6-network-develUpgrade libqt4-devel-doc-dataUpgrade qt6-exampleicons-devel-staticUpgrade qt6-platformsupport-devel-staticUpgrade libqt5network-private-headers-develUpgrade libqt5gui-private-headers-develUpgrade libqt5bootstrap-devel-static-32bitUpgrade qt6-sql-unixODBCUpgrade libqt5printsupport5-32bitUpgrade libqt4-sql-sqliteUpgrade libqt4-develUpgrade qt6-base-examplesUpgrade qt6-base-develUpgrade libQt6Widgets6Upgrade libqt5sql-devel-32bit | Aug 26, 2025 | Jun 26, 2025 |
| Ubuntu | — | No solution exists | Jul 25, 2025 | Jun 2, 2025 |
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