---
id: CVE-2026-97205
title: >-
  NGINX Plus and NGINX Open Source have a vulnerability in the
  ngx_http_core_module module
summary: >-
  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” co…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: F5
product: NGINX Plus
affected:
  - nginx_plus >= 37.1.0 < 37.1.0.1
  - nginx_plus >= 37.0.0 < 37.0.5.1
  - nginx_plus >= R36 < *
  - nginx_plus >= R35 < *
  - nginx_plus >= R34 < *
  - nginx_plus >= R33 < *
  - nginx_open_source >= 1.31.0 < 1.31.7
  - nginx_open_source >= 1.30.0 < 1.30.6
published: '2026-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:18:08.670'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97205'
references:
  - url: 'https://my.f5.com/manage/s/article/K000162608'
    label: f5sirt@f5.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97205.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97205'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2552359'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97205'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97205'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - exploit-available
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T03:57:01.124115Z'
ingestedAt: '2026-10-14T15:36:14.034Z'
epss: 0.00834
epssPercentile: 0.5748
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/suominen/CVE-2026-97205'
    - 'https://github.com/piecar21/CVE-2026-97205'
  checkedAt: '2026-10-27T19:24:50.509Z'
exploitAvailable: true
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97205.json)