CVE-2026-53909
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
61/100
Published: 2026-07-01
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
X
AT:
None
VC:
None
VI:
None
VA:
None
Description
MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on client-side checks, which can be bypassed. An authorized, low-privileged attacker can upload files with arbitrary types to the server. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| mycomplianceoffice | mycomplianceoffice | 25.3.3.1 |
References & Advisories (2)
Third Party Advisory
Product