CVE-2026-53905— Unauthorized Access to Administrator ACL View in MCO
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| MyComplianceOffice | MCO | 25.3.3.1 | affected |
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-53905
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Unauthorized Access to Administrator ACL View in MCO
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
MyComplianceOffice MCO 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MyComplianceOffice MCO是MyComplianceOffice公司的一款合规与风险管理软件。 MyComplianceOffice MCO 25.3.3.1版本存在授权问题漏洞，该漏洞源于在/customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure端点中未正确实施授权检查，可能导致低权限用户检索管理员访问控制结构，从而暴露敏感权限映射和内部配置详情。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MyComplianceOffice | MCO | 25.3.3.1 | - |
II. Public POCs for CVE-2026-53905
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-53905
请登录查看更多情报信息。
Security Blog Posts for CVE-2026-53905 (1)
- 🔗 Vulnerabilities in MyComplianceOffice MCO software | CERT Polskathird-party-advisory
Vendor Pages for CVE-2026-53905 (1)
Same Patch Batch · MyComplianceOffice · 2026-07-01 · 8 CVEs total
| CVE-2026-53902 | Privilege Escalation in MCO | |
| CVE-2026-53908 | User Enumeration in MCO | |
| CVE-2026-53903 | Insecure Direct Object Reference in MCO | |
| CVE-2026-53907 | Stored Cross‑Site Scripting in MCO | |
| CVE-2026-53906 | Path Disclosure and Path Traversal in MCO | |
| CVE-2026-53904 | Account Denial of Service in MCO | |
| CVE-2026-53909 | Arbitrary File Upload in MCO |
IV. Related Vulnerabilities
Same weakness: CWE-863
- CVE-2026-72785
Craft CMS before 5.10.6 Authorization Bypass via structures/ - CVE-2026-72771
n8n before 2.32.1 Credential Restriction Bypass via AI/LLM N - CVE-2026-18348
Velociraptor NETWORK ACL bypass via upload_azure / upload_sf - CVE-2025-30238
Privilege Escalation via Improper Authorization in User Mana - CVE-2026-12624
Vault vulnerable to LIST authorization bypass via trailing-s
V. Comments for CVE-2026-53905
No comments yet