Description
TYPO3 before 4.1.14, 4.2.x before 4.2.13, 4.3.x before 4.3.4 and 4.4.x before 4.4.1 allows XSS on the backend.
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 5.0 | typo3-src | 4.2.5-1+lenny4 | DSA-2098-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | typo3/cms-backend | < 4.1.14 | 4.1.14 | GHSA-cg45-qgcf-hf9x |
| Packagist | typo3/cms-backend | >= 4.2.0, < 4.2.13 | 4.2.13 | GHSA-cg45-qgcf-hf9x |
| Packagist | typo3/cms-backend | >= 4.3.0, < 4.3.4 | 4.3.4 | GHSA-cg45-qgcf-hf9x |
| Packagist | typo3/cms-backend | >= 4.4.0, < 4.4.1 | 4.4.1 | GHSA-cg45-qgcf-hf9x |
Advisories 1
- DSA-2098-1 typo3-src - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026