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CVE-2026-9256 NGINX ngx_http_rewrite_module vulnerability

🗓️ 22 May 2026 14:11:41Reported by f5Type 
vulnrichment
 vulnrichment🔗 github.com👁 15 Views

CVE-2026-9256: Unauthenticated exploit in NGINX rewrite module causes heap overflow and code execution via regex captures.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD		nginx -- heap buffer overflow in ngx_http_rewrite_module
22 May 202600:00
–freebsd
githubexploit
GithubExploit		Exploit for Incorrect Authorization in F5 Nginx_Plus
28 Jul 202607:29
–githubexploit
githubexploit
GithubExploit		Self-Researched-POC
28 May 202606:56
–githubexploit
githubexploit
GithubExploit		Exploit for CVE-2026-9256
3 Jun 202602:17
–githubexploit
githubexploit
GithubExploit		Exploit for CVE-2026-9256
28 May 202608:22
–githubexploit
ibm
IBM Security Bulletins		Security Bulletin:Vulnerability in NGINX affects IBM Netezza Appliance
10 Aug 202609:39
–ibm
attackerkb
ATTACKERKB		CVE-2026-9256
22 May 202614:11
–attackerkb
nessus
Tenable Nessus		Amazon Linux 2023 : nginx, nginx-all-modules, nginx-core (ALAS2023-2026-1773)
8 Jun 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : nginx, --advisory ALAS2NGINX1-2026-013 (ALASNGINX1-2026-013)
8 Jun 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 9 : nginx:1.24 (ALSA-2026:28212)
26 Jun 202600:00
–nessus
Rows per page
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28 May 2026 18:20Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.18.1
CVSS 49.2
EPSS0.10856
SSVC
CWE-122
nginx rewrite moduleheap overflowcode executionregex capturesunauthenticated access
15