CVE-2026-109162Medium· 6.3▾ Sunlit

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

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score35/ 100 · Low

impact 34.7 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Oct 13, 2026

Updated

Oct 16, 2026

CVSS

6.3

Vendor

TYPO3

Product

typo3/cms-form

CWE

CWE-552, CWE-696

Depth score

35 · Low

EPSS

0.37% · p31

Platforms

—

Source

NVD

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

CISA SSVC

decided 2026-10-16

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 15.

0.5% → 0.4%▼ 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 3 days

Oct 13, 2026Published
Disclosed via NVD
Oct 15, 2026EPSS first tracked
0.5%
Oct 15, 2026CVSS changed
— → 6.3
Oct 15, 2026Severity changed
none → medium
Oct 16, 2026Record revised
Last analysed / modified upstream

TYPO3 CWE-552 CWE-696 #nvd #cve.org

Affected

typo3/cms-form >= 14.0.0 < 14.3.9

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Change history

Field changes observed since this record was first indexed.

Oct 15, 2026CVSS — → 6.3
Oct 15, 2026Severity none → medium

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

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