CVE-2026-53902
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
64/100
Published: 2026-07-01
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
X
AT:
None
VC:
Low
VI:
High
VA:
None
Description
MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/profile-sections/group-membership endpoint. An authenticated user can modify their group membership without proper authorization checks, allowing privilege escalation. An attacker can add themselves to arbitrary groups by supplying a valid group ID, which can be obtained via other application functionalities (e.g. /customer/servlet/mco/webapi/group/picker/groups), provided he has necessary permissions, or potentially inferred through brute-force techniques. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| mycomplianceoffice | mycomplianceoffice | 25.3.3.1 |
References & Advisories (2)
Third Party Advisory
Product