Tracker / CVE-2026-42055
CVE-2026-42055
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers directive is set to off, and the large_client_header_buffers directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Prodotti e versioni affette
| f5 | dos |
|---|---|
| f5 | dos · 4.3.0 → 4.7.0 |
| f5 | nginx_gateway_fabric · 1.3.0 → 1.6.2 |
| f5 | nginx_gateway_fabric · 2.0.0 → 2.6.3 |
| f5 | nginx_ingress_controller · 3.5.0 → 3.7.2 |
| f5 | nginx_ingress_controller · 4.0.0 → 4.0.1 |
| f5 | nginx_ingress_controller · 5.0.0 → 5.5.0 |
| f5 | nginx_instance_manager · 2.17.0 → 2.22.0 |
| f5 | nginx_open_source · 1.0.0 → 1.30.2 |
| f5 | nginx_open_source · 1.31.0 → 1.31.1 |
| f5 | nginx_plus |
| f5 | nginx_plus · 37.0.0.1 → 37.0.2.1 |
| f5 | nginx_plus · r33 → r36 |
| f5 | waf · 4.10.0 → 4.16.0 |
| f5 | waf · 5.2.0 → 5.8.0 |
| f5 | waf · 5.9.0 → 5.13.1 |
| redhat | discovery |
| redhat | enterprise_linux |
| redhat | hardened_images |
| redhat | update_infrastructure · 5.0 → 5.2 |