CVE-2026-56293 Capgo Application Transfer Authorization Flaw

Technical summary

The vulnerability stems from an incomplete authorization model in the transfer_app() function. Specifically, the deploy_history.owner_org field is not updated when applications are transferred between organizations. This creates two distinct attack paths: (1) a user with source-organization privileges can maintain read access to deployment history after the app leaves their organization, and (2) the destination organization may find its deployment records inaccessible or orphaned because ownership metadata is not synchronized. The flaw is classified as an authorization issue (CWE-285: Improper Authorization) rather than a complete access-control bypass, suggesting the underlying access controls exist but fail during the transition operation.

Business impact

For managed-services and multi-tenant environments, this vulnerability introduces both confidentiality and operational risks. Deployment histories often contain sensitive information: configuration parameters, credential references, rollback procedures, and change logs that inform incident response and compliance investigations. An attacker retaining unauthorized access to deployment history could gather intelligence on system configuration, identify infrastructure patterns, or discover credentials embedded in deployment records. Conversely, a destination organization losing access to deployment history complicates audit trails, change tracking, and root-cause analysis during incidents. For organizations handling regulated workloads (healthcare, finance, payment processing), incomplete deployment records may create compliance gaps.

Affected systems

Capgo versions before 12.128.2 are affected. The vulnerability involves the transfer_app() function's handling of inter-organizational transfers, so risk is concentrated in deployments using Capgo's multi-tenant transfer capabilities. Organizations running Capgo in single-organization mode may see reduced exposure, but any instance performing app transfers should be considered at risk.

Exploitability

Exploitation requires valid authentication (PR:L in the CVSS vector), limiting attacks to authenticated users. An insider, compromised account, or supply-chain partner with organization-level access could exploit this by transferring an application and then attempting to access its deployment history from the source organization. The attack does not require user interaction (UI:N) and succeeds over the network. The low complexity (AC:L) indicates no special conditions or race conditions are needed—a straightforward transfer operation triggers the flaw. This positions the vulnerability as medium severity: meaningful impact constrained by authentication requirements.

Remediation

Upgrade Capgo to version 12.128.2 or later. This release corrects the transfer_app() function to ensure deploy_history.owner_org is updated in tandem with the application transfer. Organizations unable to upgrade immediately should audit recent inter-organizational transfers, review deploy_history access logs, and consider restricting transfer privileges to a limited set of administrative accounts pending patch deployment.

Patch guidance

Verify that your Capgo installation is running version 12.128.2 or later by checking the version in your deployment or administrative console. If your version is earlier than 12.128.2, plan an upgrade as part of your regular maintenance window. The patch is a point release addressing a specific authorization flaw, so compatibility risks should be minimal; however, test in a non-production environment first if organizational policy requires it. Review release notes to confirm no breaking changes or special migration steps apply to your deployment.

Detection guidance

Monitor Capgo audit logs for application transfer operations followed by access attempts to deploy_history records from the source organization by users no longer assigned to that organization. Tools that track role-based access control (RBAC) changes should flag scenarios where ownership metadata (owner_org) diverges from current application membership. If you have centralized logging, correlate transfer events with subsequent history-access API calls by the initiating user or their source-organization peers. Deployment history queries that return results for applications no longer in an organization's scope may indicate the vulnerability has been exploited.

Why prioritize this

CVE-2026-56293 should be prioritized for multi-tenant and managed-service Capgo deployments, particularly those handling sensitive workloads. While the CVSS score of 5.4 (MEDIUM) reflects the authentication requirement, the integrity and confidentiality impact—especially around deployment history visibility—can have cascading effects on compliance, incident response, and supply-chain security. Organizations that frequently transfer applications between business units or customers should treat this as a higher-priority patch. Single-organization deployments with no inter-org transfers may defer, but should still plan an upgrade cycle.

Risk score, explained

The CVSS 3.1 score of 5.4 (MEDIUM) balances three factors: (1) authentication requirement (PR:L) reduces the attack surface to insiders and account-compromise scenarios; (2) low complexity (AC:L) means no special circumstances are needed to trigger the flaw; (3) impact is dual-faceted—low confidentiality (C:L) from unauthorized history access and low integrity (I:L) from lost or inconsistent ownership records, with no availability impact (A:N). The score does not account for the potentially high business or compliance consequences in regulated sectors; it reflects technical exploitability. Organizations handling sensitive data or operating under audit requirements should consider a slightly elevated risk profile locally.

Frequently asked questions