Description
Cross-site scripting (XSS) vulnerability in the tree render API (TCA-Tree) in the Backend API in TYPO3 4.5.x before 4.5.21, 4.6.x before 4.6.14, and 4.7.x before 4.7.6 allows remote authenticated backend users to inject arbitrary web script or HTML via unspecified vectors.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | typo3-src | 4.3.9+dfsg1-1+squeeze7 | DSA-2574-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | typo3/cms | >= 4.5.0, < 4.5.21 | 4.5.21 | GHSA-qmmw-ch2q-j6xx |
| Packagist | typo3/cms | >= 4.6.0, < 4.6.14 | 4.6.14 | GHSA-qmmw-ch2q-j6xx |
| Packagist | typo3/cms | >= 4.7.0, < 4.7.6 | 4.7.6 | GHSA-qmmw-ch2q-j6xx |
Advisories 1
- DSA-2574-1 typo3-src - several Debian Security (DSA / DLA) · Mar 9, 2026