🛡️ CVE-2023-47127 — typo3

🟡 CVSS 5.0 — Medium ✅ No Known Exploit CWE-302 OSV
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

TYPO3 vulnerable to Weak Authentication in Session Handling

> ### 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)

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

Affected software

CVE-2023-47127 is recorded against 2 packages.

  • typo3
  • typo3/cms-core (from 12.0.0 up to 12.4.8)

Timeline and source

Published on 6 March 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
github.com (Web)
typo3.org (Web)

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE CWE-302
Public Exploit ✅ No
Source OSV
Published 2024-03-06
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
typo3 — —
typo3/cms-core 12.0.0 12.4.8

Similar Threats

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