NGINX Gateway Fabric vulnerability_CVE-2026-11311

8.1 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Description

When NGINX Plus is configured as the data plane for NGINX Gateway Fabric, an injection vulnerability exists in the NGINX configuration generator component of NGINX Gateway Fabric. User-supplied string values from the NginxProxy Custom Resource Definition serverTokens field and the AuthenticationFilter Custom Resource Definition extraAuthArgs field are rendered directly into NGINX configuration templates without sanitization or escaping. An authenticated attacker with permission to create or modify these Custom Resource Definitions may craft values that inject arbitrary NGINX configuration directives. This is a control plane issue; there is no data plane exposure from the vulnerability trigger itself.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Basic Information

ID CVE-2026-11311

Source f5

Published Jun 17, 2026 at 14:04

Affected Product

Vendor F5

Product NGINX Gateway Fabric

Version 2.5.0

Affected Versions F5 NGINX Gateway Fabric 2.5.0

CWE Classification

CWE-76

References

my.f5.com /manage/s/article/K000161611

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