CVE-2026-104939
CVE-2026-104939 · NGINX Ingress Controller vulnerability
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.7 · High · EPSS 0.4% · Fix available
- Published
- Updated
Affected products and versions
nginx ingress controller
- Versions
- ≥ 5.6.0, < 5.7.0: Affected (custom)
Update to 5.7.0