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OpenAdvisories
High · 8.1 Public exploit CVE-2026-97205 EUVD-2026-101115GHSA-ff5w-vvxc-fm9x

NGINX ngx_http_core_module vulnerability

Published Oct 14, 2026 · Updated Oct 15, 2026 · Assigned by f5

Vendor: F5 Product: NGINX Open Source Product: NGINX Plus Package: ingress-nginx-controller-1.15 Package: nginx Package: nginx Package: nginx Package: nginx Package: nginx-mainline Package: nginx-stable Category: Network devices Ecosystem: Alpine Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu Ecosystem: Wolfi

Description

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module. When asynchronous file I/O (AIO) is enabled in certain configurations, processing a Server Side Includes (SSI) page containing “include virtual” commands may trigger a Use-After-Free (UAF) in the NGINX worker process. This may cause memory corruption or a worker process crash. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.

Impact:
This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system, corrupt its memory, or possibly trigger code execution. There is no control plane exposure; this is a data plane issue only.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

VendorProductAffectedFixed
F5 NGINX Plus 37.1.0 – < 37.1.0.1, 37.0.0 – < 37.0.5.1, R36, R35, R34, R33 37.1.0.1
F5 NGINX Open Source 1.31.0 – < 1.31.7, 1.30.0 – < 1.30.6 1.31.7

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 nginx 1.30.4-8 —
Debian 13 nginx 1.26.3-3+deb13u10 —
Debian 12 nginx No fix yet —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 26.10 nginx 1.30.4-7ubuntu1.1 USN-8955-1
Ubuntu 26.04 LTS nginx 1.28.3-2ubuntu1.12 USN-8955-1
Ubuntu 24.04 LTS nginx 1.24.0-2ubuntu7.19 USN-8955-1
Ubuntu 22.04 LTS nginx 1.18.0-6ubuntu14.22 USN-8955-1
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS nginx 1.18.0-0ubuntu1.7+esm4 USN-8955-2
Ubuntu Pro 18.04 LTS nginx 1.14.0-0ubuntu1.11+esm5 USN-8955-2
Ubuntu Pro 16.04 LTS nginx 1.10.3-0ubuntu0.16.04.5+esm10 USN-8955-2
Ubuntu Pro 14.04 LTS nginx 1.4.6-1ubuntu3.9+esm9 USN-8955-2

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
Red Hat Hardened Images 1 nginx +11 1.30.6-1.hum1 RHSA-2026:83427

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 8 nginx 1:1.24.0-3.module+el8.10.0+40144+38158758 RLSA-2026:98671

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed nginx 1.31.7-1.1 openSUSE-SU-2026:12143-1

Alpine

Security tracker ↗
ReleasePackageFixed inAdvisory
Alpine v3.24 nginx 1.30.6-r0 —

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 nginx +9 1:1.30.6-1.amzn2023.0.1 ALAS2023-2026-3263

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 nginx 1.30.6-1 —

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling ingress-nginx-controller-1.15 1.15.12-r0 —
Wolfi rolling nginx-mainline 1.31.7-r0 —
Wolfi rolling nginx-stable 1.30.6-r0 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 7

References