Upload restriction bypass in Wertheim SafeController Software allows authenticated users to upload arbitrary files
Summary
| CVE | CVE-2026-34027 |
|---|---|
| State | PUBLISHED |
| Assigner | SEC-VLab |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-15 12:16:25 UTC |
| Updated | 2026-06-15 21:05:18 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 5.3 MEDIUM from 551230f0-3615-47bd-b7cc-93e92e730bbf
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.003050000 probability, percentile 0.219060000 (date 2026-06-22)
Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted upload of file with dangerous type
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 551230f0-3615-47bd-b7cc-93e92e730bbf | Secondary | 5.3 | MEDIUM | 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/E:X/C... |
| 4.0 | CNA | CVSS | 5.3 | MEDIUM | 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 |
CVSS v4.0 Breakdown
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Wertheim GmbH | Wertheim SafeController Software For VAULT ROOMS Safe Deposit Locker System | affected Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| wertheim-safes.com/safe-deposit-box-management | 551230f0-3615-47bd-b7cc-93e92e730bbf | wertheim-safes.com | |
| r.sec-consult.com/wertheim | 551230f0-3615-47bd-b7cc-93e92e730bbf | r.sec-consult.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Christian Hager, SEC Consult Vulnerability Lab (en)
CNA: Gorazd Jank, SEC Consult Vulnerability Lab (en)
CNA: Philipp Espernberger, SEC Consult Vulnerability Lab (en)
Additional Advisory Data
Solutions
CNA: 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.
Workarounds
CNA: 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.