Description
Description
NGINX Ingress Controller has a vulnerability when implementing an externalAuth policy for ingress. NGINX Ingress Controller may mishandle the HTTP response from an OAuth IdP and allow an attacker to acquire unauthenticated access to protected paths before the proper external authentication can happen.
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| F5 | NGINX Ingress Controller | 5.6.0 – < 5.7.0 | 5.7.0 |
Advisories 1
- WID-SEC-2026-3948 NGINX: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
References
- https://my.f5.com/manage/s/article/K000162617 vendor-advisory