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Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-42926

When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxy_http_version to 2, and also uses proxy_set_body, an attacker may be able to inject frame headers and payload bytes to the upstream peer. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.003

EPSS Ranking 25.9%

CVSS Severity

CVSS v3 Score 5.8

References

https://my.f5.com/manage/s/article/K000161131

Products affected by CVE-2026-42926

F5 » Nginx Gateway Fabric » Version: 1.3.0

cpe:2.3:a:f5:nginx_gateway_fabric:1.3.0
F5 » Nginx Gateway Fabric » Version: 1.4.0

cpe:2.3:a:f5:nginx_gateway_fabric:1.4.0
F5 » Nginx Gateway Fabric » Version: 1.5.0

cpe:2.3:a:f5:nginx_gateway_fabric:1.5.0
F5 » Nginx Gateway Fabric » Version: 1.5.1

cpe:2.3:a:f5:nginx_gateway_fabric:1.5.1
F5 » Nginx Gateway Fabric » Version: 1.6.0

cpe:2.3:a:f5:nginx_gateway_fabric:1.6.0
F5 » Nginx Gateway Fabric » Version: 1.6.1

cpe:2.3:a:f5:nginx_gateway_fabric:1.6.1
F5 » Nginx Gateway Fabric » Version: 1.6.2

cpe:2.3:a:f5:nginx_gateway_fabric:1.6.2
F5 » Nginx Gateway Fabric » Version: 2.0.0

cpe:2.3:a:f5:nginx_gateway_fabric:2.0.0
F5 » Nginx Gateway Fabric » Version: 2.0.1

cpe:2.3:a:f5:nginx_gateway_fabric:2.0.1
F5 » Nginx Gateway Fabric » Version: 2.0.2

cpe:2.3:a:f5:nginx_gateway_fabric:2.0.2
F5 » Nginx Gateway Fabric » Version: 2.1.0

cpe:2.3:a:f5:nginx_gateway_fabric:2.1.0
F5 » Nginx Gateway Fabric » Version: 2.1.1

cpe:2.3:a:f5:nginx_gateway_fabric:2.1.1
F5 » Nginx Gateway Fabric » Version: 2.1.2

cpe:2.3:a:f5:nginx_gateway_fabric:2.1.2
F5 » Nginx Gateway Fabric » Version: 2.1.3

cpe:2.3:a:f5:nginx_gateway_fabric:2.1.3
F5 » Nginx Gateway Fabric » Version: 2.1.4

cpe:2.3:a:f5:nginx_gateway_fabric:2.1.4
F5 » Nginx Gateway Fabric » Version: 2.2.0

cpe:2.3:a:f5:nginx_gateway_fabric:2.2.0
F5 » Nginx Gateway Fabric » Version: 2.2.1

cpe:2.3:a:f5:nginx_gateway_fabric:2.2.1
F5 » Nginx Gateway Fabric » Version: 2.2.2

cpe:2.3:a:f5:nginx_gateway_fabric:2.2.2
F5 » Nginx Gateway Fabric » Version: 2.3.0

cpe:2.3:a:f5:nginx_gateway_fabric:2.3.0
F5 » Nginx Gateway Fabric » Version: 2.4.0

cpe:2.3:a:f5:nginx_gateway_fabric:2.4.0
F5 » Nginx Gateway Fabric » Version: 2.4.1

cpe:2.3:a:f5:nginx_gateway_fabric:2.4.1
F5 » Nginx Gateway Fabric » Version: 2.4.2

cpe:2.3:a:f5:nginx_gateway_fabric:2.4.2
F5 » Nginx Gateway Fabric » Version: 2.5.0

cpe:2.3:a:f5:nginx_gateway_fabric:2.5.0
F5 » Nginx Gateway Fabric » Version: 2.5.1

cpe:2.3:a:f5:nginx_gateway_fabric:2.5.1
F5 » Nginx Gateway Fabric » Version: 2.6.0

cpe:2.3:a:f5:nginx_gateway_fabric:2.6.0
F5 » Nginx Ingress Controller » Version: 3.5.0

cpe:2.3:a:f5:nginx_ingress_controller:3.5.0
F5 » Nginx Ingress Controller » Version: 3.5.1

cpe:2.3:a:f5:nginx_ingress_controller:3.5.1
F5 » Nginx Ingress Controller » Version: 3.5.2

cpe:2.3:a:f5:nginx_ingress_controller:3.5.2
F5 » Nginx Ingress Controller » Version: 3.6.0

cpe:2.3:a:f5:nginx_ingress_controller:3.6.0
F5 » Nginx Ingress Controller » Version: 3.6.1

cpe:2.3:a:f5:nginx_ingress_controller:3.6.1
F5 » Nginx Ingress Controller » Version: 3.6.2

cpe:2.3:a:f5:nginx_ingress_controller:3.6.2
F5 » Nginx Ingress Controller » Version: 3.7.0

cpe:2.3:a:f5:nginx_ingress_controller:3.7.0
F5 » Nginx Ingress Controller » Version: 3.7.1

cpe:2.3:a:f5:nginx_ingress_controller:3.7.1
F5 » Nginx Ingress Controller » Version: 3.7.2

cpe:2.3:a:f5:nginx_ingress_controller:3.7.2
F5 » Nginx Ingress Controller » Version: 4.0.0

cpe:2.3:a:f5:nginx_ingress_controller:4.0.0
F5 » Nginx Ingress Controller » Version: 4.0.1

cpe:2.3:a:f5:nginx_ingress_controller:4.0.1
F5 » Nginx Ingress Controller » Version: 5.0.0

cpe:2.3:a:f5:nginx_ingress_controller:5.0.0
F5 » Nginx Ingress Controller » Version: 5.3.0

cpe:2.3:a:f5:nginx_ingress_controller:5.3.0
F5 » Nginx Ingress Controller » Version: 5.3.2

cpe:2.3:a:f5:nginx_ingress_controller:5.3.2
F5 » Nginx Ingress Controller » Version: 5.3.3

cpe:2.3:a:f5:nginx_ingress_controller:5.3.3
F5 » Nginx Ingress Controller » Version: 5.3.4

cpe:2.3:a:f5:nginx_ingress_controller:5.3.4
F5 » Nginx Ingress Controller » Version: 5.4.0

cpe:2.3:a:f5:nginx_ingress_controller:5.4.0
F5 » Nginx Ingress Controller » Version: 5.4.1

cpe:2.3:a:f5:nginx_ingress_controller:5.4.1
F5 » Nginx Ingress Controller » Version: 5.4.2

cpe:2.3:a:f5:nginx_ingress_controller:5.4.2
F5 » Nginx Instance Manager » Version: 2.16.0

cpe:2.3:a:f5:nginx_instance_manager:2.16.0
F5 » Nginx Instance Manager » Version: 2.17.0

cpe:2.3:a:f5:nginx_instance_manager:2.17.0
F5 » Nginx Instance Manager » Version: 2.17.1

cpe:2.3:a:f5:nginx_instance_manager:2.17.1
F5 » Nginx Instance Manager » Version: 2.17.2

cpe:2.3:a:f5:nginx_instance_manager:2.17.2
F5 » Nginx Instance Manager » Version: 2.17.3

cpe:2.3:a:f5:nginx_instance_manager:2.17.3
F5 » Nginx Instance Manager » Version: 2.17.4

cpe:2.3:a:f5:nginx_instance_manager:2.17.4
F5 » Nginx Instance Manager » Version: 2.18.0

cpe:2.3:a:f5:nginx_instance_manager:2.18.0
F5 » Nginx Instance Manager » Version: 2.19.0

cpe:2.3:a:f5:nginx_instance_manager:2.19.0
F5 » Nginx Instance Manager » Version: 2.19.1

cpe:2.3:a:f5:nginx_instance_manager:2.19.1
F5 » Nginx Instance Manager » Version: 2.21.0

cpe:2.3:a:f5:nginx_instance_manager:2.21.0
F5 » Nginx Instance Manager » Version: 2.22.0

cpe:2.3:a:f5:nginx_instance_manager:2.22.0
F5 » Nginx Open Source » Version: 1.29.4

cpe:2.3:a:f5:nginx_open_source:1.29.4
F5 » Nginx Open Source » Version: 1.29.5

cpe:2.3:a:f5:nginx_open_source:1.29.5
F5 » Nginx Open Source » Version: 1.29.6

cpe:2.3:a:f5:nginx_open_source:1.29.6
F5 » Nginx Open Source » Version: 1.29.7

cpe:2.3:a:f5:nginx_open_source:1.29.7
F5 » Nginx Open Source » Version: 1.29.8

cpe:2.3:a:f5:nginx_open_source:1.29.8
F5 » Nginx Open Source » Version: 1.30.0

cpe:2.3:a:f5:nginx_open_source:1.30.0

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-42926

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