CVE-2026-16456 in OpenShift AI
Summary
by MITRE • 08/10/2026
A flaw was found in the `odh-model-controller`. An authenticated user with permissions to create custom resources can exploit a vulnerability in the `loadSecret` function. This function improperly reads the Secret namespace from user-controlled input without validation. This allows an attacker to read sensitive API keys and cloud credentials from other namespaces, leading to information disclosure.
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Analysis
by VulDB Data Team • 08/10/2026
The vulnerability exists within the odh-model-controller component where an authenticated user with sufficient permissions to create custom resources can exploit a flaw in the loadSecret function implementation. This represents a critical security weakness that directly violates the principle of least privilege and proper input validation. The issue stems from the controller's failure to properly validate namespace information provided by users, creating a path for unauthorized cross-namespace data access.
The technical flaw manifests in how the loadSecret function processes user-controlled inputs without adequate sanitization or validation mechanisms. When an attacker creates a custom resource that references a secret, the function blindly accepts the namespace value from the input without verifying whether the requesting user has legitimate access rights to that namespace. This vulnerability aligns with CWE-20, which covers improper input validation, and specifically relates to insecure direct object reference issues where users can access resources they shouldn't be able to reach. The flaw enables a privilege escalation scenario where an authenticated user can bypass normal namespace isolation mechanisms.
The operational impact of this vulnerability is severe as it allows attackers to extract sensitive API keys, cloud credentials, and other confidential information from namespaces they should not have access to. This creates potential for extensive data breaches, unauthorized cloud resource usage, and lateral movement within the cluster environment. The vulnerability essentially provides an information disclosure attack vector that could lead to complete compromise of the affected system. Attackers could leverage this to gain access to production secrets, database credentials, or other sensitive operational data stored in different namespaces.
Mitigation strategies should focus on implementing strict input validation and namespace isolation controls within the loadSecret function. Organizations must ensure that all user-provided namespace values are validated against the requesting user's permissions and that proper access control checks are enforced before any secret retrieval operations occur. The controller should implement proper authorization mechanisms that verify namespace access rights and reject requests for namespaces where the user lacks appropriate privileges. Additionally, implementing principle of least privilege enforcement and regular security auditing of custom resource definitions can help prevent similar vulnerabilities from being exploited in the future.
This vulnerability demonstrates the importance of secure coding practices and proper input validation in containerized environments. The issue highlights how seemingly simple functions can create significant security risks when proper validation controls are missing. Organizations should implement comprehensive security testing including static code analysis, dynamic application security testing, and regular penetration testing to identify similar flaws before they can be exploited. The ATT&CK framework categorizes this as a privilege escalation technique through insecure object references, making it particularly dangerous in multi-tenant environments where namespace isolation is critical for security posture maintenance.