CVE-2026-14450
CriticalCVSS 9.9Summary
A flaw was found in the MaaS API allowing any pod within the cluster to bypass the Kuadrant AuthPolicy gateway by forging HTTP headers `X-MaaS-Username` and `X-MaaS-Group`, which are trusted verbatim. This lack of first-party authentication enables an attacker to gain unauthorized access and escalate privileges, including minting Kubernetes ServiceAccount tokens in other tenants' namespaces, revoking API keys, and exfiltrating sensitive model access configuration.
Risk Assessment
Risk of unauthorized access to cluster resources, privilege escalation, and confidentiality breach in the Kuadrant environment.
Recommendation
Apply patches from the MaaS/Kuadrant vendor. Implement proper first-party authentication and header validation, and restrict trust in incoming headers.
Original NVD description (English source)
A flaw was found in the MaaS API. This vulnerability allows any pod within the cluster to bypass the Kuadrant AuthPolicy gateway by forging HTTP headers, specifically `X-MaaS-Username` and `X-MaaS-Group`, which are trusted verbatim. This lack of first-party authentication enables an attacker to gain unauthorized access and escalate privileges. The concrete consequences include the ability to mint Kubernetes ServiceAccount tokens in other tenants' namespaces, revoke API keys, and exfiltrate sensitive model access configuration.