What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-14 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• typo3: from 12.2.0 before 12.4.8 — fixed in 12.4.8

How to fix

Upgrade to a fixed version: typo3 12.4.8. Check the vendor advisory for mitigations.

References

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

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