CVE-2026-53905

HIGH

MyComplianceOffice - Unauthorized Access to Administrator ACL View in MCO

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-53905. PoCs published by HermesNA-1.

AI-analyzed exploit summary This repository contains an auto-generated stub module for CVE-2026-53905, an authorization bypass vulnerability in MCO's /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. The code includes placeholder logic but lacks actual exploit implementation.

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.

Exploits (1)

github STUB 1 stars
by HermesNA-1 · pythonpoc
https://github.com/HermesNA-1/SnakeSploit/tree/main/data/modules_generated/cve-2026-53905_mco_does_not.py

This repository contains an auto-generated stub module for CVE-2026-53905, an authorization bypass vulnerability in MCO's /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. The code includes placeholder logic but lacks actual exploit implementation.

Classification
Stub 98%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Theoretical
Target: MCO (MyComplianceOffice) web application
Auth required
Prerequisites: Authenticated low-privileged user access · Network access to the MCO web application endpoint
mistral-large-3 · analyzed Jul 09, 2026 Full analysis →

References (2)

Core 2
Core References
Third Party Advisory third-party-advisory
https://cert.pl/en/posts/2026/07/CVE-2026-53902

Scores

CVSS v3 7.1
EPSS 0.0019
EPSS Percentile 9.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-863
Status published
Products (2)
MyComplianceOffice/MCO 25.3.3.1
mycomplianceoffice/mycomplianceoffice 25.3.3.1
Published Jul 01, 2026
Tracked Since Jul 01, 2026