CVE-2026-34027

Upload restriction bypass in Wertheim SafeController Software allows authenticated users to upload arbitrary files

Published Jun 15, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
The Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, contains insufficient server-side file type validation in the /safe/contract/uploadcustomdocuments endpoint. The application validates uploaded files based on the user-controlled HTTP Content-Type value and accepts the upload if this value contains an allowed string such as pdf, jpeg, tiff, or png. An authenticated attacker with any role or permission level can spoof the Content-Type value and upload arbitrary file content.

Remediation

Vendor Solution

The vendor provides a patch which should be installed immediately. Specific fixed version information was not provided. Affected parties should contact the vendor to request the update.


Vendor Workaround

Restrict access to the SafeController web application and document upload functionality to authorized users and trusted network locations only. Enforce server-side validation of uploaded file extensions, MIME types, file signatures, and file content. Do not rely on client-supplied Content-Type headers for file validation. Store uploaded files outside of web-executable directories and ensure that uploaded content cannot be interpreted as server-side code. These measures should only be treated as interim risk reduction; the vendor-provided patch should be installed.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wertheim
Wertheim safecontroller Software For Vault Rooms (safe Deposit Locker System)
Vendors & Products Wertheim
Wertheim safecontroller Software For Vault Rooms (safe Deposit Locker System)
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, contains insufficient server-side file type validation in the /safe/contract/uploadcustomdocuments endpoint. The application validates uploaded files based on the user-controlled HTTP Content-Type value and accepts the upload if this value contains an allowed string such as pdf, jpeg, tiff, or png. An authenticated attacker with any role or permission level can spoof the Content-Type value and upload arbitrary file content.
Title Upload restriction bypass in Wertheim SafeController Software allows authenticated users to upload arbitrary files
Weaknesses CWE-434
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
SEC-VLab
Published
Updated
Jun 15, 2026, 12:31 PM
Reserved
Mar 25, 2026, 10:46 AM
Status
Deferred
Published
Jun 15, 2026, 12:16 PM
Modified
Oct 25, 2026, 11:10 PM