CVE-2026-50107

When NGINX Plus or NGINX Open Source 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 (CRD) access log format setting are rendered directly into NGINX configuration templates without sanitization or escaping. An authenticated attacker with permission to create or modify these CRDs 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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://my.f5.com/manage/s/article/K000161785	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*

History

22 Jun 2026, 15:00

Type	Values Removed	Values Added
References	~~() https://my.f5.com/manage/s/article/K000161785 -~~	() https://my.f5.com/manage/s/article/K000161785 - Vendor Advisory
First Time		F5 nginx Gateway Fabric F5
CPE		cpe:2.3:a:f5:nginx_gateway_fabric::::::::

18 Jun 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-17 20:17

Updated : 2026-06-22 15:00

NVD link : CVE-2026-50107

Mitre link : CVE-2026-50107

CVE.ORG link : CVE-2026-50107

JSON object : View

Products Affected

f5

nginx_gateway_fabric

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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