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.
Advisories

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Fixes

Solution

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Workaround

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History

Sat, 17 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 14 Oct 2026 09:15:00 +0000


Tue, 13 Oct 2026 09:45:00 +0000

Type Values Removed Values Added
Description 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.
Title TYPO3 CMS - Security Misconfiguration in Form Framework
First Time appeared Typo3
Typo3 typo3 Cms
Weaknesses CWE-552
CWE-696
CPEs cpe:2.3:a:typo3:typo3_cms:*:*:*:*:*:*:*:*
Vendors & Products Typo3
Typo3 typo3 Cms
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: TYPO3

Published:

Updated: 2026-10-16T17:17:41.990Z

Reserved: 2026-10-12T12:26:08.379Z

Link: CVE-2026-109162

cve-icon Vulnrichment

Updated: 2026-10-16T17:01:49.655Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T10:17:15.463

Modified: 2026-10-16T19:56:15.773

Link: CVE-2026-109162

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T12:15:14Z

Weaknesses