CVE-2026-109162

CVSS 6.3 (medium) · published 2026-10-13

Forms using FileUpload or ImageUpload elements with a custom saveToFileMount configured stored uploaded files in the default storage folder 1:/user_upload/ instead of the configured destination. This could cause uploaded files to end up in a publicly accessible storage even though a restricted, non-public storage had been configured. Files stored this way are served directly, without the access checks applied to non-public storages. Forms that use the default value for saveToFileMount are not affected. This issue affects TYPO3 CMS versions 14.0.0-14.3.8.

Weakness: CWE-552, CWE-696

Source: NVD CVE-2026-109162

References

• https://github.com/TYPO3/typo3/commit/cc3e8e28b0e830aaf6ad857272f3f2dc3c4ede12
• https://github.com/TYPO3/typo3/commit/f536f75c6bd3456165e4200e5df1b236ddeae3b0
• https://news.typo3.com/security/advisory/typo3-core-sa-2026-024

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