Description
Multiple cross-site scripting (XSS) vulnerabilities in the backend user interface in TYPO3 3.3.x through 3.8.x, 4.0 before 4.0.12, 4.1 before 4.1.10, 4.2 before 4.2.6, and 4.3alpha1 allow remote attackers to inject arbitrary web script or HTML via unspecified fields.
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+lenny1 | DTSA-193-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | typo3/cms | >= 3.3.0 | — | GHSA-jg55-3q6h-2ccf |
| Packagist | typo3/cms | >= 4.0, < 4.0.12 | 4.0.12 | GHSA-jg55-3q6h-2ccf |
| Packagist | typo3/cms | >= 4.1.0, < 4.1.10 | 4.1.10 | GHSA-jg55-3q6h-2ccf |
| Packagist | typo3/cms | >= 4.2.0, < 4.2.6 | 4.2.6 | GHSA-jg55-3q6h-2ccf |
| Packagist | typo3/cms | 4.3alpha1 | — | GHSA-jg55-3q6h-2ccf |
Advisories 1
- DTSA-193-1 typo3 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- [oss-security] 20090210 CVE request: typo3 xss (typo3-sa-2009-002) mailing-list
- DSA-1720 vendor-advisory
- 1021709 vdb-entry
- http://typo3.org/teams/security/security-bulletins/typo3-sa-2009-002/