CVE-2026-56279 in Capgo
Summary
by MITRE • 07/10/2026
Capgo before 12.128.2 contains an information disclosure vulnerability in the get_orgs_v7(userid) RPC function that remains publicly invokable despite intended private access controls. Unauthenticated attackers can supply arbitrary user UUIDs to retrieve foreign users' organization membership, roles, management emails, and billing metadata.
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Analysis
by VulDB Data Team • 07/10/2026
This vulnerability represents a critical access control flaw that undermines fundamental security principles of authentication and authorization within the Capgo platform. The issue manifests in the get_orgs_v7(userid) remote procedure call function which was designed to operate with private access controls but remains publicly accessible to unauthenticated users. This represents a classic case of insecure direct object reference where the system fails to properly validate user permissions before executing privileged operations. The vulnerability allows attackers to exploit the lack of proper authentication checks by simply supplying arbitrary user UUIDs through the RPC interface, effectively bypassing intended security boundaries that should prevent unauthorized access to other users' organizational data.
The technical implementation flaw stems from inadequate input validation and missing authorization verification within the RPC function's execution flow. When an attacker submits a valid UUID through the get_orgs_v7 endpoint, the system processes the request without verifying whether the requesting entity has legitimate authorization to access that specific user's organizational information. This failure aligns with CWE-284 Access Control Issues where improper access control mechanisms allow unauthorized users to perform privileged operations. The vulnerability essentially creates a backdoor through which any unauthenticated individual can probe the system for valid user identifiers and subsequently harvest sensitive organizational metadata.
The operational impact of this information disclosure vulnerability extends beyond simple data exposure, as it provides attackers with comprehensive insights into target organizations' structures and administrative configurations. The compromised data includes not only organizational membership details but also user roles, management contact information, and billing metadata that could facilitate further attacks such as social engineering campaigns or targeted phishing operations. This type of reconnaissance information is particularly valuable for threat actors seeking to understand organizational hierarchies and identify key personnel within target environments. The exposure of billing metadata specifically violates privacy principles and could enable financial fraud or extortion attempts against organizations.
From an ATT&CK framework perspective, this vulnerability maps directly to techniques involving credential access and discovery of system information through the use of publicly accessible APIs and RPC endpoints. The ability to enumerate user accounts and extract organizational data represents a significant reconnaissance capability that aligns with initial access and discovery phases of attack chains. Organizations may face regulatory compliance issues if this exposure results in unauthorized access to personally identifiable information or sensitive business data, particularly in environments governed by standards such as gdpr or hipaa. The vulnerability also demonstrates poor defense-in-depth practices where multiple security controls failed simultaneously to protect against unauthorized data access.
Mitigation strategies should focus on implementing proper authentication verification mechanisms before executing any privileged RPC operations. The system must enforce strict access control checks that validate user credentials and permissions against the requested resource before processing any requests. Additionally, input validation should be strengthened to ensure that UUID parameters are properly sanitized and that the system maintains proper session management controls. Organizations should implement rate limiting and monitoring for unusual API access patterns to detect potential exploitation attempts. The fix requires immediate patching of the RPC function to enforce proper authorization checks and potentially implementing additional security controls such as api key validation or oauth2 token verification to ensure only legitimate authenticated users can access organizational data through these endpoints.