CVE Watch23 de jul. de 2026

CVE-2026-8711

NGINX JavaScript has a vulnerability when the js_fetch_proxy directive is configured with at least one client-controlled NGINX variable (for

CVSS

8.1

Alta

EPSS

9.7%

p96

KEV

—

Exploit Today

0-100

Publicado: 19 de mai. de 2026 · Última mod.: 23 de jul. de 2026 · CWE-122

EPSS · 30d

0.8%EPSS · 30 dias9.7%

2026-10-142026-11-11

Descrição técnica

NGINX JavaScript has a vulnerability when the js_fetch_proxy directive is configured with at least one client-controlled NGINX variable (for example, $http_*, $arg_*, $cookie_*) and a location invoking the ngx.fetch() operation from NGINX JavaScript. An unauthenticated attacker can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap 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.

Referências oficiais

my.f5.comhttps://my.f5.com/manage/s/article/K000161307

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