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CVE-2026-9256

Опубликовано: 22 мая 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 8.1

Описание

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.

РелизСтатусПримечание
devel

not-affected

1.30.1-4ubuntu1
esm-infra-legacy/trusty

released

1.4.6-1ubuntu3.9+esm6
esm-infra-legacy/xenial

released

1.10.3-0ubuntu0.16.04.5+esm7
esm-infra/bionic

released

1.14.0-0ubuntu1.11+esm2
esm-infra/focal

released

1.18.0-0ubuntu1.7+esm1
jammy

released

1.18.0-6ubuntu14.12
noble

released

1.24.0-2ubuntu7.9
questing

released

1.28.0-6ubuntu1.4
resolute

released

1.28.3-2ubuntu1.2
upstream

released

1.30.1-3

Показывать по

EPSS

Процентиль: 95%
0.09884
Низкий

8.1 High

CVSS3

Связанные уязвимости

CVSS3: 8.1
redhat
2 месяца назад

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.

CVSS3: 8.1
nvd
2 месяца назад

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.

CVSS3: 8.1
msrc
2 месяца назад

NGINX ngx_http_rewrite_module vulnerability

CVSS3: 8.1
debian
2 месяца назад

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ ...

suse-cvrf
около 1 месяца назад

Security update for nginx

EPSS

Процентиль: 95%
0.09884
Низкий

8.1 High

CVSS3