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CVE-2026-8711 is a heap-based buffer overflow in NGINX JavaScript (njs), affecting the ngx_http_js_module when the js_fetch_proxy directive is configured using at least one client-controlled NGINX variable, such as $http_, $arg_, or $cookie_*, and a location invokes ngx.fetch() from NGINX JavaScript. An unauthenticated remote attacker can send crafted HTTP requests that influence those variables and trigger memory corruption in the NGINX worker process. The issue is reported to affect njs versions 0.9.4 through 0.9.8 and was fixed in 0.9.9.
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A critical vulnerability affecting NGINX JavaScript (njs), specifically versions 0.9.4 to 0.9.8, referenced by F5 as an ngx_http_js_module vulnerability.
A heap-based buffer overflow in NGINX JavaScript (njs) related to js_fetch_proxy handling of client-controlled variables when used with ngx.fetch(), causing worker process crashes and potentially remote code execution under some conditions.
A heap buffer overflow vulnerability in NGINX JavaScript involving js_fetch_proxy with client-controlled NGINX variables and ngx.fetch(); it can be triggered remotely by unauthenticated crafted HTTP requests and may lead to worker process restart or possible code execution when ASLR is disabled.
A vulnerability in njs related to js_fetch_proxy and unsafe use of request-derived nginx variables in configurations using ngx.fetch(), which can be abused via specially crafted HTTP requests.
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Cross-references every affected SKU, including bundled OEM variants.
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