Description
Multiple cross-site scripting (XSS) vulnerabilities in TYPO3 4.2.x before 4.2.15, 4.3.x before 4.3.7, and 4.4.x before 4.4.4 allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) the RemoveXSS function, and allow remote authenticated users to inject arbitrary web script or HTML via vectors related to (2) 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+lenny6 | DSA-2121-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | typo3/cms-backend | >= 4.2.0, < 4.2.15 | 4.2.15 | GHSA-mwqv-jff6-5v62 |
| Packagist | typo3/cms-backend | >= 4.3.0, < 4.3.7 | 4.3.7 | GHSA-mwqv-jff6-5v62 |
| Packagist | typo3/cms-backend | >= 4.4.0, < 4.4.4 | 4.4.4 | GHSA-mwqv-jff6-5v62 |
Advisories 1
- DSA-2121-1 typo3-src - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 43786 vdb-entry
- DSA-2121 vendor-advisory
- http://typo3.org/teams/security/security-bulletins/typo3-sa-2010-020/