CVE-2009-3629: Multiple cross-site scripting (XSS) vulnerabilities in the Backend subcomponent in TYPO3 4.0.13 and earlier...

Security readout for executives and security teams

This is an old TYPO3 backend cross-site scripting issue. Authenticated backend users could inject script or HTML through unspecified vectors. It matters most where legacy TYPO3 installations still exist or backend accounts are broadly granted. The public bundle does not show active exploitation or a CVSS score. Exposure is likely limited to organizations still running the listed legacy TYPO3 versions, especially if backend access is internet-reachable or available to many users. Current, supported TYPO3 deployments are not identified as affected in the provided bundle. Treat as a legacy-platform cleanup item unless affected TYPO3 backends are still accessible or widely used. If present in production, prioritize upgrade because authenticated XSS in an admin backend can support account abuse and content tampering. Mitigation focus: Identify any TYPO3 deployments running affected versions.; Upgrade affected TYPO3 branches to fixed or supported versions per TYPO3 guidance.; Restrict backend access to trusted authenticated users until remediation is complete..

Prepared

Jun 28, 2026, 18:15 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.