🛡️ CVE-2023-47126 — typo3

🟡 CVSS 5.0 — Medium ✅ No Known Exploit CWE-200 OSV
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Information Disclosure in typo3/cms-install tool

> ### CVSS: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C (3.5)

Problem

The login screen of the standalone install tool discloses the full path of the transient data directory (e.g. _/var/www/html/var/transient/_). This applies to composer-based scenarios only - “classic” non-composer installations are not affected.

Solution

Update to TYPO3 version 12.4.8 that fixes the problem described above.

Credits

Thanks to Markus Klein who reported and fixed the issue.

References

  • [TYPO3-CORE-SA-2023-005](https://typo3.org/security/advisory/typo3-core-sa-2023-005)

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no 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 none, availability none.

Weakness class

CVE-2023-47126 is classified as CWE-200: Exposure of Sensitive Information. Information that should stay internal is disclosed to someone who is not authorised to see it.

Affected software

CVE-2023-47126 is recorded against 2 packages.

  • typo3
  • typo3/cms-install (from 12.2.0 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:N/UI:N/S:U/C:L/I:N/A:N
CWE CWE-200
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-install 12.2.0 12.4.8

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