Skip to content
fr Sign in
7.5 High

CVE-2026-94197 An authentication and authorization bypass vulnerability exists in F5 NGINX Kubernetes Ingress Controller (NIC) when…

Description

An authentication and authorization bypass vulnerability exists in F5 NGINX Kubernetes Ingress Controller (NIC) when configured with the `ExternalAuth` policy or Ingress external authentication. Client-supplied X-Forwarded-Prefix, X-Forwarded-URI, X-Original-URI, and X-Forwarded-Method routing and method headers are forwarded unsanitized into the internal authentication subrequest (handled by the NGINX auth_request directive). As a result, an unauthenticated, remote attacker may spoof request attributes evaluated by the external authentication provider. Impact: This vulnerability may allow remote attackers unauthenticated access to protected paths. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products and versions

Product Affected versions Fixed in
NGINX Ingress Controller 5.5 5.5.0 → < 5.7.0 5.7.0

References

Timeline

  1. Published
  2. Last modified

Other CVEs of NGINX Ingress Controller

The 8 CVEs of NGINX Ingress Controller →
CVE-2026-104939 Description NGINX Ingress Controller has a vulnerability when implementing an externalAuth policy for ingress 7.5 High CVE-2026-77180 When NGINX Ingress Controller is configured with Ingress annotations, an injection vulnerability exists in the… 8.3 High CVE-2026-52865 When NGINX Ingress Controller processes Ingress or TransportServer resources, an authenticated, remote attacker with… 6.5 Medium CVE-2026-55723 When NGINX Ingress Controller is configured with Custom Resource Definitions (CRDs) or Ingress annotations, an injection… 8.3 High
Track this CVE