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 is open to a session fixation attack which allows remote attackers to hijack a victim's session.
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-install | < 4.1.14 | 4.1.14 | GHSA-gqmh-5xmq-3fhg |
| Packagist | typo3/cms-install | >= 4.2.0, < 4.2.13 | 4.2.13 | GHSA-gqmh-5xmq-3fhg |
| Packagist | typo3/cms-install | >= 4.3.0, < 4.3.4 | 4.3.4 | GHSA-gqmh-5xmq-3fhg |
| Packagist | typo3/cms-install | >= 4.4.0, < 4.4.1 | 4.4.1 | GHSA-gqmh-5xmq-3fhg |
Advisories 1
- DSA-2098-1 typo3-src - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026