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.
Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.
Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| MyComplianceOffice | MCO | unknown |
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No data available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
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References
History
Wed, 01 Jul 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Arbitrary File Upload in MCO | |
| Weaknesses | CWE-434 | |
| References |
| |
| Metrics |
cvssV4_0
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Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: CERT-PL
Published:
Updated: 2026-07-01T13:37:13.787Z
Reserved: 2026-06-11T07:44:52.179Z
Link: CVE-2026-53909
Vulnrichment
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NVD
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Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses
-
CWE-434
Unrestricted Upload of File with Dangerous Type