CVE-2026-56222 Capgo CVE debrief

Who should care

Organizations using Capgo before version 12.128.2 should be aware of this vulnerability and take immediate action to mitigate the risk. Specifically, administrators of Capgo applications should prioritize upgrading to version 12.128.2 or later to prevent potential attacks. Additionally, defenders should monitor their Capgo applications for any suspicious activity related to role binding creation.

Technical summary

The vulnerability is caused by a lack of proper authorization checks in the POST /private/role_bindings endpoint. When creating a new role binding, the endpoint does not verify if the app_id matches the organization of the user making the request. This allows an attacker with administrative privileges in one organization to create role bindings for applications in other organizations. The vulnerability has a CVSS score of 8.6, indicating a high severity. The attack vector is network-based, and the attack complexity is low. The vulnerability can be exploited by an attacker with high privileges, and it allows for both confidentiality and integrity impacts.

Defensive priority

High priority should be given to upgrading Capgo to version 12.128.2 or later. In the meantime, defenders should monitor their Capgo applications for suspicious activity related to role binding creation and implement additional access controls to restrict role binding creation to authorized users.

Recommended defensive actions

• Upgrade Capgo to version 12.128.2 or later
• Monitor Capgo applications for suspicious activity related to role binding creation
• Implement additional access controls to restrict role binding creation to authorized users
• Review and update role bindings to ensure they are properly configured
• Perform regular security audits to detect potential vulnerabilities

Evidence notes

The vulnerability was reported by an unknown source and is publicly available in the NVD database. The CVE record was published on June 23, 2026, and modified on June 24, 2026. The vulnerability has a CVSS score of 8.6, indicating a high severity.

Official resources