Vulnerability Details CVE-2026-48142
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their control) to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 28.4%
CVSS Severity
CVSS v3 Score 4.8
Products affected by CVE-2026-48142
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F5
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Dos
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Version: 4.3.0
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F5
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Dos
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Version: 4.4.0
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F5
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Dos
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Version: 4.5.0
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F5
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Dos
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Version: 4.6.0
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F5
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Dos
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Version: 4.7.0
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F5
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Dos
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Version: 4.9.0
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cpe:2.3:a:f5:nginx_gateway_fabric:1.3.0
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cpe:2.3:a:f5:nginx_gateway_fabric:1.4.0
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cpe:2.3:a:f5:nginx_gateway_fabric:1.5.0
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cpe:2.3:a:f5:nginx_gateway_fabric:1.5.1
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cpe:2.3:a:f5:nginx_gateway_fabric:1.6.0
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cpe:2.3:a:f5:nginx_gateway_fabric:1.6.1
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cpe:2.3:a:f5:nginx_gateway_fabric:1.6.2
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cpe:2.3:a:f5:nginx_gateway_fabric:2.0.0
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cpe:2.3:a:f5:nginx_gateway_fabric:2.0.1
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cpe:2.3:a:f5:nginx_gateway_fabric:2.0.2
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cpe:2.3:a:f5:nginx_gateway_fabric:2.1.0
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cpe:2.3:a:f5:nginx_gateway_fabric:2.1.1
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cpe:2.3:a:f5:nginx_gateway_fabric:2.1.2
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cpe:2.3:a:f5:nginx_gateway_fabric:2.1.3
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cpe:2.3:a:f5:nginx_gateway_fabric:2.1.4
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cpe:2.3:a:f5:nginx_gateway_fabric:2.2.0
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cpe:2.3:a:f5:nginx_gateway_fabric:2.2.1
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cpe:2.3:a:f5:nginx_gateway_fabric:2.2.2
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cpe:2.3:a:f5:nginx_gateway_fabric:2.3.0
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cpe:2.3:a:f5:nginx_gateway_fabric:2.4.0
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cpe:2.3:a:f5:nginx_gateway_fabric:2.4.1
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cpe:2.3:a:f5:nginx_gateway_fabric:2.4.2
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cpe:2.3:a:f5:nginx_gateway_fabric:2.5.0
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cpe:2.3:a:f5:nginx_gateway_fabric:2.5.1
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cpe:2.3:a:f5:nginx_gateway_fabric:2.6.0
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cpe:2.3:a:f5:nginx_gateway_fabric:2.6.1
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cpe:2.3:a:f5:nginx_gateway_fabric:2.6.2
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cpe:2.3:a:f5:nginx_gateway_fabric:2.6.3
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cpe:2.3:a:f5:nginx_ingress_controller:3.5.0
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cpe:2.3:a:f5:nginx_ingress_controller:3.5.1
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cpe:2.3:a:f5:nginx_ingress_controller:3.5.2
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cpe:2.3:a:f5:nginx_ingress_controller:3.6.0
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cpe:2.3:a:f5:nginx_ingress_controller:3.6.1
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cpe:2.3:a:f5:nginx_ingress_controller:3.6.2
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cpe:2.3:a:f5:nginx_ingress_controller:3.7.0
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cpe:2.3:a:f5:nginx_ingress_controller:3.7.1
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cpe:2.3:a:f5:nginx_ingress_controller:3.7.2
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cpe:2.3:a:f5:nginx_ingress_controller:4.0.0
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cpe:2.3:a:f5:nginx_ingress_controller:4.0.1
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cpe:2.3:a:f5:nginx_ingress_controller:5.0.0
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cpe:2.3:a:f5:nginx_ingress_controller:5.3.0
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cpe:2.3:a:f5:nginx_ingress_controller:5.3.2
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cpe:2.3:a:f5:nginx_ingress_controller:5.3.3
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cpe:2.3:a:f5:nginx_ingress_controller:5.3.4
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cpe:2.3:a:f5:nginx_ingress_controller:5.4.0
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cpe:2.3:a:f5:nginx_ingress_controller:5.4.1
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cpe:2.3:a:f5:nginx_ingress_controller:5.4.2
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cpe:2.3:a:f5:nginx_ingress_controller:5.4.3
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cpe:2.3:a:f5:nginx_ingress_controller:5.5.0
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cpe:2.3:a:f5:nginx_instance_manager:2.17.0
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cpe:2.3:a:f5:nginx_instance_manager:2.17.1
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cpe:2.3:a:f5:nginx_instance_manager:2.17.2
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cpe:2.3:a:f5:nginx_instance_manager:2.17.3
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cpe:2.3:a:f5:nginx_instance_manager:2.17.4
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cpe:2.3:a:f5:nginx_instance_manager:2.18.0
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cpe:2.3:a:f5:nginx_instance_manager:2.19.0
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cpe:2.3:a:f5:nginx_instance_manager:2.19.1
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cpe:2.3:a:f5:nginx_instance_manager:2.21.0
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cpe:2.3:a:f5:nginx_open_source:1.0.0
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cpe:2.3:a:f5:nginx_open_source:1.0.1
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cpe:2.3:a:f5:nginx_open_source:1.0.2
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cpe:2.3:a:f5:nginx_open_source:1.0.3
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cpe:2.3:a:f5:nginx_open_source:1.0.4
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cpe:2.3:a:f5:nginx_open_source:1.0.5
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cpe:2.3:a:f5:nginx_open_source:1.1.0
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cpe:2.3:a:f5:nginx_open_source:1.1.1
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cpe:2.3:a:f5:nginx_open_source:1.1.10
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cpe:2.3:a:f5:nginx_open_source:1.1.11
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cpe:2.3:a:f5:nginx_open_source:1.1.12
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cpe:2.3:a:f5:nginx_open_source:1.1.13
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cpe:2.3:a:f5:nginx_open_source:1.1.14
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cpe:2.3:a:f5:nginx_open_source:1.1.15
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cpe:2.3:a:f5:nginx_open_source:1.1.16
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cpe:2.3:a:f5:nginx_open_source:1.1.17
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cpe:2.3:a:f5:nginx_open_source:1.1.18
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cpe:2.3:a:f5:nginx_open_source:1.1.19
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cpe:2.3:a:f5:nginx_open_source:1.1.2
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cpe:2.3:a:f5:nginx_open_source:1.1.3
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cpe:2.3:a:f5:nginx_open_source:1.1.4
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cpe:2.3:a:f5:nginx_open_source:1.1.5
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cpe:2.3:a:f5:nginx_open_source:1.1.6
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cpe:2.3:a:f5:nginx_open_source:1.1.7
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cpe:2.3:a:f5:nginx_open_source:1.1.8
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cpe:2.3:a:f5:nginx_open_source:1.1.9
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cpe:2.3:a:f5:nginx_open_source:1.11.0
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cpe:2.3:a:f5:nginx_open_source:1.11.1
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cpe:2.3:a:f5:nginx_open_source:1.11.10
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cpe:2.3:a:f5:nginx_open_source:1.11.11
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cpe:2.3:a:f5:nginx_open_source:1.11.12
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cpe:2.3:a:f5:nginx_open_source:1.11.13
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cpe:2.3:a:f5:nginx_open_source:1.11.2
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cpe:2.3:a:f5:nginx_open_source:1.11.3
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cpe:2.3:a:f5:nginx_open_source:1.11.4
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cpe:2.3:a:f5:nginx_open_source:1.11.5
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cpe:2.3:a:f5:nginx_open_source:1.11.6
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cpe:2.3:a:f5:nginx_open_source:1.11.7
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cpe:2.3:a:f5:nginx_open_source:1.11.8
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cpe:2.3:a:f5:nginx_open_source:1.11.9
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cpe:2.3:a:f5:nginx_open_source:1.13.0
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cpe:2.3:a:f5:nginx_open_source:1.13.1
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cpe:2.3:a:f5:nginx_open_source:1.13.10
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cpe:2.3:a:f5:nginx_open_source:1.13.11
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cpe:2.3:a:f5:nginx_open_source:1.13.12
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cpe:2.3:a:f5:nginx_open_source:1.13.2
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cpe:2.3:a:f5:nginx_open_source:1.13.3
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cpe:2.3:a:f5:nginx_open_source:1.13.4
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cpe:2.3:a:f5:nginx_open_source:1.13.5
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cpe:2.3:a:f5:nginx_open_source:1.13.6
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cpe:2.3:a:f5:nginx_open_source:1.13.7
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cpe:2.3:a:f5:nginx_open_source:1.13.8
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cpe:2.3:a:f5:nginx_open_source:1.13.9
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cpe:2.3:a:f5:nginx_open_source:1.15.0
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cpe:2.3:a:f5:nginx_open_source:1.15.1
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cpe:2.3:a:f5:nginx_open_source:1.15.10
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cpe:2.3:a:f5:nginx_open_source:1.15.11
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cpe:2.3:a:f5:nginx_open_source:1.15.12
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cpe:2.3:a:f5:nginx_open_source:1.15.2
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cpe:2.3:a:f5:nginx_open_source:1.15.3
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cpe:2.3:a:f5:nginx_open_source:1.15.4
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cpe:2.3:a:f5:nginx_open_source:1.15.5
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cpe:2.3:a:f5:nginx_open_source:1.15.6
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cpe:2.3:a:f5:nginx_open_source:1.15.7
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cpe:2.3:a:f5:nginx_open_source:1.15.8
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cpe:2.3:a:f5:nginx_open_source:1.15.9
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cpe:2.3:a:f5:nginx_open_source:1.17.0
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cpe:2.3:a:f5:nginx_open_source:1.17.1
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cpe:2.3:a:f5:nginx_open_source:1.17.10
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cpe:2.3:a:f5:nginx_open_source:1.17.2
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cpe:2.3:a:f5:nginx_open_source:1.17.3
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cpe:2.3:a:f5:nginx_open_source:1.17.4
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cpe:2.3:a:f5:nginx_open_source:1.17.5
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cpe:2.3:a:f5:nginx_open_source:1.17.6
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cpe:2.3:a:f5:nginx_open_source:1.17.7
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cpe:2.3:a:f5:nginx_open_source:1.17.8
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cpe:2.3:a:f5:nginx_open_source:1.17.9
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cpe:2.3:a:f5:nginx_open_source:1.19.0
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cpe:2.3:a:f5:nginx_open_source:1.19.1
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cpe:2.3:a:f5:nginx_open_source:1.19.10
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cpe:2.3:a:f5:nginx_open_source:1.19.2
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cpe:2.3:a:f5:nginx_open_source:1.19.3
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cpe:2.3:a:f5:nginx_open_source:1.19.4
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cpe:2.3:a:f5:nginx_open_source:1.19.5
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cpe:2.3:a:f5:nginx_open_source:1.19.6
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cpe:2.3:a:f5:nginx_open_source:1.19.7
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cpe:2.3:a:f5:nginx_open_source:1.19.8
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cpe:2.3:a:f5:nginx_open_source:1.19.9
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cpe:2.3:a:f5:nginx_open_source:1.2.0
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cpe:2.3:a:f5:nginx_open_source:1.21.0
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cpe:2.3:a:f5:nginx_open_source:1.21.1
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cpe:2.3:a:f5:nginx_open_source:1.21.2
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cpe:2.3:a:f5:nginx_open_source:1.21.3
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cpe:2.3:a:f5:nginx_open_source:1.21.4
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cpe:2.3:a:f5:nginx_open_source:1.21.5
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cpe:2.3:a:f5:nginx_open_source:1.21.6
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cpe:2.3:a:f5:nginx_open_source:1.23.0
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cpe:2.3:a:f5:nginx_open_source:1.23.1
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cpe:2.3:a:f5:nginx_open_source:1.23.2
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cpe:2.3:a:f5:nginx_open_source:1.23.3
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cpe:2.3:a:f5:nginx_open_source:1.23.4
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cpe:2.3:a:f5:nginx_open_source:1.25.0
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cpe:2.3:a:f5:nginx_open_source:1.25.1
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cpe:2.3:a:f5:nginx_open_source:1.25.2
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cpe:2.3:a:f5:nginx_open_source:1.25.3
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cpe:2.3:a:f5:nginx_open_source:1.25.4
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cpe:2.3:a:f5:nginx_open_source:1.25.5
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cpe:2.3:a:f5:nginx_open_source:1.26.1
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cpe:2.3:a:f5:nginx_open_source:1.26.2
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cpe:2.3:a:f5:nginx_open_source:1.27.0
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cpe:2.3:a:f5:nginx_open_source:1.27.1
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cpe:2.3:a:f5:nginx_open_source:1.27.2
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cpe:2.3:a:f5:nginx_open_source:1.27.3
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cpe:2.3:a:f5:nginx_open_source:1.27.4
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cpe:2.3:a:f5:nginx_open_source:1.27.5
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cpe:2.3:a:f5:nginx_open_source:1.28.2
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cpe:2.3:a:f5:nginx_open_source:1.28.3
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cpe:2.3:a:f5:nginx_open_source:1.29.0
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cpe:2.3:a:f5:nginx_open_source:1.29.1
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cpe:2.3:a:f5:nginx_open_source:1.29.2
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cpe:2.3:a:f5:nginx_open_source:1.29.3
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cpe:2.3:a:f5:nginx_open_source:1.29.4
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cpe:2.3:a:f5:nginx_open_source:1.29.5
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cpe:2.3:a:f5:nginx_open_source:1.29.6
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cpe:2.3:a:f5:nginx_open_source:1.29.7
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cpe:2.3:a:f5:nginx_open_source:1.29.8
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cpe:2.3:a:f5:nginx_open_source:1.3.0
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cpe:2.3:a:f5:nginx_open_source:1.3.1
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cpe:2.3:a:f5:nginx_open_source:1.3.10
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cpe:2.3:a:f5:nginx_open_source:1.3.11
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cpe:2.3:a:f5:nginx_open_source:1.3.12
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cpe:2.3:a:f5:nginx_open_source:1.3.13
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cpe:2.3:a:f5:nginx_open_source:1.3.14
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cpe:2.3:a:f5:nginx_open_source:1.3.15
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cpe:2.3:a:f5:nginx_open_source:1.3.16
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cpe:2.3:a:f5:nginx_open_source:1.3.2
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cpe:2.3:a:f5:nginx_open_source:1.3.3
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cpe:2.3:a:f5:nginx_open_source:1.3.4
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cpe:2.3:a:f5:nginx_open_source:1.3.5
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cpe:2.3:a:f5:nginx_open_source:1.3.6
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cpe:2.3:a:f5:nginx_open_source:1.3.7
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cpe:2.3:a:f5:nginx_open_source:1.3.8
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cpe:2.3:a:f5:nginx_open_source:1.3.9
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cpe:2.3:a:f5:nginx_open_source:1.30.0
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cpe:2.3:a:f5:nginx_open_source:1.30.1
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cpe:2.3:a:f5:nginx_open_source:1.30.2
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cpe:2.3:a:f5:nginx_open_source:1.31.0
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cpe:2.3:a:f5:nginx_open_source:1.31.1
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cpe:2.3:a:f5:nginx_open_source:1.4.0
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cpe:2.3:a:f5:nginx_open_source:1.5.0
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cpe:2.3:a:f5:nginx_open_source:1.5.1
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cpe:2.3:a:f5:nginx_open_source:1.5.10
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cpe:2.3:a:f5:nginx_open_source:1.5.11
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cpe:2.3:a:f5:nginx_open_source:1.5.12
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cpe:2.3:a:f5:nginx_open_source:1.5.13
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cpe:2.3:a:f5:nginx_open_source:1.5.2
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cpe:2.3:a:f5:nginx_open_source:1.5.3
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cpe:2.3:a:f5:nginx_open_source:1.5.4
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cpe:2.3:a:f5:nginx_open_source:1.5.5
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cpe:2.3:a:f5:nginx_open_source:1.5.6
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cpe:2.3:a:f5:nginx_open_source:1.5.7
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cpe:2.3:a:f5:nginx_open_source:1.5.8
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cpe:2.3:a:f5:nginx_open_source:1.5.9
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cpe:2.3:a:f5:nginx_open_source:1.7.0
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cpe:2.3:a:f5:nginx_open_source:1.7.1
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cpe:2.3:a:f5:nginx_open_source:1.7.10
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cpe:2.3:a:f5:nginx_open_source:1.7.11
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cpe:2.3:a:f5:nginx_open_source:1.7.12
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cpe:2.3:a:f5:nginx_open_source:1.7.2
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cpe:2.3:a:f5:nginx_open_source:1.7.3
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cpe:2.3:a:f5:nginx_open_source:1.7.4
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cpe:2.3:a:f5:nginx_open_source:1.7.5
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cpe:2.3:a:f5:nginx_open_source:1.7.6
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cpe:2.3:a:f5:nginx_open_source:1.7.7
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cpe:2.3:a:f5:nginx_open_source:1.7.8
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cpe:2.3:a:f5:nginx_open_source:1.7.9
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cpe:2.3:a:f5:nginx_open_source:1.9.0
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cpe:2.3:a:f5:nginx_open_source:1.9.1
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cpe:2.3:a:f5:nginx_open_source:1.9.10
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cpe:2.3:a:f5:nginx_open_source:1.9.11
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cpe:2.3:a:f5:nginx_open_source:1.9.12
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cpe:2.3:a:f5:nginx_open_source:1.9.13
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cpe:2.3:a:f5:nginx_open_source:1.9.14
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cpe:2.3:a:f5:nginx_open_source:1.9.15
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cpe:2.3:a:f5:nginx_open_source:1.9.2
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cpe:2.3:a:f5:nginx_open_source:1.9.3
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cpe:2.3:a:f5:nginx_open_source:1.9.4
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cpe:2.3:a:f5:nginx_open_source:1.9.5
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cpe:2.3:a:f5:nginx_open_source:1.9.6
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cpe:2.3:a:f5:nginx_open_source:1.9.7
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cpe:2.3:a:f5:nginx_open_source:1.9.8
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cpe:2.3:a:f5:nginx_open_source:1.9.9
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cpe:2.3:a:f5:nginx_plus:*
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cpe:2.3:a:f5:nginx_plus:r33
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cpe:2.3:a:f5:nginx_plus:r34
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cpe:2.3:a:f5:nginx_plus:r35
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cpe:2.3:a:f5:nginx_plus:r36
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F5
»
Waf
»
Version: 4.10.0
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F5
»
Waf
»
Version: 4.11.0
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F5
»
Waf
»
Version: 4.12.0
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F5
»
Waf
»
Version: 4.13.0
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F5
»
Waf
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Version: 4.14.0
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F5
»
Waf
»
Version: 4.15.0
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F5
»
Waf
»
Version: 4.16.0
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F5
»
Waf
»
Version: 5.10.0
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F5
»
Waf
»
Version: 5.11.0
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F5
»
Waf
»
Version: 5.11.1
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F5
»
Waf
»
Version: 5.12.0
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F5
»
Waf
»
Version: 5.12.1
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F5
»
Waf
»
Version: 5.13.0
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F5
»
Waf
»
Version: 5.13.1
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F5
»
Waf
»
Version: 5.2.0
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F5
»
Waf
»
Version: 5.3.0
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F5
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Waf
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Version: 5.4.0
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F5
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Waf
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Version: 5.5.0
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F5
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Waf
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Version: 5.6.0
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F5
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Waf
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Version: 5.7.0
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F5
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Waf
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Version: 5.8.0
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F5
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Waf
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Version: 5.9.0