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HIGH · 7.1

CVE-2026-53905

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administ...

Vulnerability Description

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administrator access control structures without proper authorization checks. This may expose sensitive permission mappings and internal configuration details. 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 Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
MycomplianceofficeMycomplianceoffice25.3.3.1

Related Weaknesses (CWE)

CWE-863

References

FAQ

What is CVE-2026-53905?

CVE-2026-53905 is a vulnerability with a CVSS score of 7.1 (HIGH). MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administ...

How severe is CVE-2026-53905?

CVE-2026-53905 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-53905?

Check the references section above for vendor advisories and patch information. Affected products include: Mycomplianceoffice Mycomplianceoffice.