TYPO3 Core: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
WID-SEC-2026-2744 · first 11.08.2026 · updated 11.08.2026 · CVSS 8,0
What it is about
TYPO3 ist ein freies Content-Management-System, basierend auf der Scriptsprache PHP und einer SQL-Datenbank. Über zahlreiche Extensions kann der Funktionsumfang der Core-Installation individuell erweitert werden. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in TYPO3 Core ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsvorkehrungen zu umgehen
Am I affected?
Affected according to the BSI:
- TYPO3 Core <13.4.34
- TYPO3 Core <14.3.6
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- TYPO3 Core 13.4.34
- TYPO3 Core 14.3.6
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
CVE: CVE-2026-19418
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.