CVE-2026-34027

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

MEDIUM
5.3
CVSS Score
Published: June 15, 2026 at 10:04 AM UTC
Updated: October 25, 2026 at 11:10 PM UTC
1 product affected across 1 vendorSafeController Software

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory
Source: cverecord
https://r.sec-consult.com/wertheim

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMSEC-VLab
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-434

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