CVE-2026-69090 in Admidio
Summary
by MITRE • 08/03/2026
Admidio before 5.0.11 fails to validate target organization membership in role handlers, allowing authenticated role administrators to delete, activate, deactivate, or edit roles belonging to other organizations. Attackers can supply a role UUID from another organization to groups_roles.php handlers to modify that organization's roles without authorization.
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Analysis
by VulDB Data Team • 08/03/2026
This vulnerability exists in Admidio versions prior to 5.0.11 where the application fails to properly validate organizational membership when processing role management operations through the groups_roles.php handler. The flaw represents a critical access control bypass that allows authenticated users with role administrator privileges to manipulate roles belonging to different organizations within the same system instance. The vulnerability stems from insufficient input validation and authorization checks that should verify whether the requesting user has legitimate access rights to perform operations on the specified role UUID. When an attacker submits a role UUID from another organization, the system processes the request without confirming that the user belongs to the organization associated with that role, effectively breaking the organizational boundary enforcement mechanism.
The technical implementation of this vulnerability occurs in the role handler logic where the application accepts role identifiers through URL parameters or POST data without performing proper organizational context validation. This type of flaw falls under CWE-285: Improper Authorization, specifically manifesting as an authorization bypass due to insufficient access control checks. The vulnerability enables attackers to perform unauthorized actions including deleting roles, activating or deactivating them, and editing role properties that should be restricted to the legitimate organization administrators. From an operational perspective, this creates a severe risk of data integrity compromise and potential disruption of organizational structures within the application.
The attack vector requires only authenticated access as a role administrator, making it particularly dangerous since attackers can leverage their existing privileges to escalate their control across multiple organizations. This vulnerability directly maps to ATT&CK technique T1078.004: Valid Accounts - Cloud Accounts, as it exploits legitimate administrative accounts to gain unauthorized access to resources outside of the attacker's designated organizational scope. The impact extends beyond simple privilege escalation to include potential data exposure and disruption of organizational workflows, particularly in multi-tenant environments where separate organizations share the same application instance.
Organizations using affected versions should immediately implement the vendor-provided patch that addresses this validation gap by introducing proper organizational context checks before processing role management operations. The mitigation strategy requires ensuring that all role UUIDs submitted to the groups_roles.php handler are validated against the user's organizational affiliation, with additional logging of role modification attempts for audit purposes. System administrators should also consider implementing network-level restrictions and monitoring for unusual patterns of cross-organizational role access attempts. This vulnerability demonstrates the critical importance of proper input validation and authorization checks in multi-tenant applications where organizational boundaries must be strictly enforced to maintain data isolation and security posture across different administrative domains.