CVE-2026-53907

MCO is vulnerable to Stored Cross‑Site Scripting (XSS) via the application logo upload functionality. An attacker with the ability to change the application logo can upload a crafted SVG file containing malicious JavaScript code that is executed when the logo is rendered or opened. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://cert.pl/en/posts/2026/07/CVE-2026-53902	Third Party Advisory
https://mco.mycomplianceoffice.com/	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:mycomplianceoffice:mycomplianceoffice:25.3.3.1:*:*:*:*:*:*:*

History

06 Jul 2026, 14:07

Type	Values Removed	Values Added
References	~~() https://cert.pl/en/posts/2026/07/CVE-2026-53902 -~~	() https://cert.pl/en/posts/2026/07/CVE-2026-53902 - Third Party Advisory
References	~~() https://mco.mycomplianceoffice.com/ -~~	() https://mco.mycomplianceoffice.com/ - Product
First Time		Mycomplianceoffice mycomplianceoffice Mycomplianceoffice
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
CPE		cpe:2.3:a:mycomplianceoffice:mycomplianceoffice:25.3.3.1:::::::*

01 Jul 2026, 13:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-01 13:17

Updated : 2026-07-06 14:07

NVD link : CVE-2026-53907

Mitre link : CVE-2026-53907

CVE.ORG link : CVE-2026-53907

JSON object : View

Products Affected

mycomplianceoffice

mycomplianceoffice

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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