Description
Cross-site Scripting (XSS) in TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to inject arbitrary web script or HTML via the RemoveXSS function.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| TYPO3 | TYPO3 | before 4.5.4 | — |
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+squeeze1 | DSA-2289-1 |
| Debian 5.0 | typo3-src | 4.2.5-1+lenny8 | DSA-2289-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | typo3/cms | < 4.3.12 | 4.3.12 | GHSA-q22w-r5qq-v3wf |
| Packagist | typo3/cms | >= 4.4.0, < 4.4.9 | 4.4.9 | GHSA-q22w-r5qq-v3wf |
| Packagist | typo3/cms | >= 4.5.0, < 4.5.4 | 4.5.4 | GHSA-q22w-r5qq-v3wf |
Advisories 1
- DSA-2289-1 typo3-src - several Debian Security (DSA / DLA) · Mar 9, 2026