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certfr-2023-avi-0934 — De multiples vulnérabilités ont été découvertes dans Typo3. Elles permettent à un attaquant…

certfr-2023-avi-0934

EUVD-2026-160775

fkie_cve-2023-47127

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In typo3 installations there are always at least two different sites. Eg. first.example.org and second.example.com. In affected versions a session cookie generated for the first site can be reused on the second site without requiring additional authentication. This vulnerability has been addressed in versions 8.7.55, 9.5.44, 10.4.41, 11.5.33, and 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.

GHSA-3vmm-7h4j-69rm — TYPO3 vulnerable to Weak Authentication in Session Handling

Affected: Packagist: typo3/cms-core

> ### CVSS: `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:X/RL:O/RC:C` (4.0)

### Problem Given that there are at least two different sites in the same TYPO3 installation - for instance _first.example.org_ and _second.example.com_ - then a session cookie generated for the first site can be reused on the second site without requiring additional authentication.

This vulnerability primarily affects the frontend of the website. It's important to note that exploiting this vulnerability requires a valid user account.

### Solution Update to TYPO3 versions 8.7.55 ELTS, 9.5.44 ELTS, 10.4.41 ELTS, 11.5.33, 12.4.8 that fix the problem described above.

### Credits Thanks to Rémy Daniel who reported this issue, and to TYPO3 core & security team member Benjamin Franzke who fixed the issue.

### References * [TYPO3-CORE-SA-2023-006](https://typo3.org/security/advisory/typo3-core-sa-2023-006)

gsd-2023-47127

WID-SEC-W-2023-2883 — TYPO3 Core: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in TYPO3 Core ausnutzen, um Informationen offenzulegen, Sicherheitsvorkehrungen zu umgehen oder einen Cross-Site-Scripting-Angriff durchzuführen.