GHSA-9c6w-55cp-5w25 TYPO3 CMS Stored Cross-Site Scripting via FileDumpController

• Packagist typo3/cms-core: >= 7.0.0, < 7.6.58 → fixed in 7.6.58 • Packagist typo3/cms-core: >= 8.0.0, < 8.7.48 → fixed in 8.7.48 • Packagist typo3/cms-core: >= 9.0.0, < 9.5.37 → fixed in 9.5.37 • Packagist typo3/cms-core: >= 10.0.0, < 10.4.32 → fixed in 10.4.32 • Packagist typo3/cms-core: >= 11.0.0, < 11.5.16 → fixed in 11.5.16 • Packagist typo3/cms: >= 10.0.0, < 10.4.32 → fixed in 10.4.32 • Packagist typo3/cms: >= 11.0.0, < 11.5.16 → fixed in 11.5.16

> ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (5.0) Problem It has been discovered that the `FileDumpController` (backend and frontend context) is vulnerable to cross-site scripting when malicious files are displayed using this component. A valid backend user account is needed to exploit this vulnerability. Solution Update to TYPO3 version 7.6.58 ELTS, 8.7.48 ELTS, 9.5.37 ELTS, 10.4.32 or 11.5.16 that fix the problem described above. Credits Thanks to Vautia who reported this issue and to TYPO3 core & security team member Oliver Hader who fixed the issue. References • TYPO3-CORE-SA-2022-009 • Vulnerability Report on huntr.dev (embargoed +30 days)