CVE-2026-94197 F5 NGINX Kubernetes Ingress Controller - Authentication Bypass

F5 NGINX Kubernetes Ingress Controller contains an authentication and authorization bypass caused by unsanitized forwarding of client-supplied routing and method headers in the internal authentication subrequest, letting unauthenticated remote attackers access protected paths, exploit requires ExternalAuth policy or Ingress external authentication configuration.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-290

Vendor fix

Update to the latest version with a fix for ExternalAuth header sanitization.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs