ALPINE-CVE-2026-9256

ALPINE-CVE-2026-9256

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. An unauthenticated attacker along with conditions beyond their control 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.

CVSS 9.2 · Critique · Correctif disponible

Publication

2026-05-22T15:16:27.073Z

Mise à jour

2026-10-01T02:17:49.420874630Z

Pile logicielle: system · web

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