CVE-2026-97205: NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module

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HIGH 8.1REMOTEWATCHLIST

CVE-2026-97205 is a high-severity flaw (CVSS 8.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 Rand

Why this priority

High severity
Covered by 3 security sources
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-416
Published	2026-10-14
Last modified	2026-10-15

Publisher (CNA): F5 Networks

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-10-14 15:17 UTCPublished CVE record published
2026-10-15 11:18 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · fio · FIXED · 3.43-2.fc46 · FEDORA-2026-b36219886b · source

sudo dnf upgrade --advisory=FEDORA-2026-b36219886b

Fedora ELN · weston · FIXED · 16.0.2-1.eln159 · FEDORA-2026-b98ccaa6a0 · source

sudo dnf upgrade --advisory=FEDORA-2026-b98ccaa6a0

Debian 12 · nginx · NO FIX YET

Debian 13 · nginx · FIXED · 1.26.3-3+deb13u10

sudo apt update && sudo apt install --only-upgrade nginx dpkg --compare-versions "$(dpkg-query -W -f='${Version}' nginx)" ge "1.26.3-3+deb13u10" && echo PATCHED || echo STILL-VULNERABLE

RHEL 10 · nginx · NO FIX YET

RHEL 8 · nginx:1.24/nginx · NO FIX YET

RHEL 9 · nginx · NO FIX YET

RHEL 9 · nginx:1.24/nginx · NO FIX YET

RHEL 9 · nginx:1.26/nginx · NO FIX YET

Alpine 3.24 · nginx · FIXED · nginx-1.30.6-r0

apk add --upgrade nginx apk info -v nginx

Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2026-3263 · source

sudo dnf update --advisory=ALAS2023-2026-3263

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: suominen/CVE-2026-97205 (1 stars)

Advisories and coverage

Official advisories

Ubuntu Security Notices: USN-8955-1: nginx vulnerabilities 2026-10-26
Amazon Linux 2023 ALAS: ALAS2023-2026-3263 (medium): nginx 2026-10-24
Amazon Linux 2 ALAS: ALAS2NGINX1-2026-017 (medium): nginx 2026-10-24

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-97205?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-97205 being exploited?

CVE-2026-97205 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-97205 affect?

CVE-2026-97205 affects affected software. Severity is high (CVSS 8.1). 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” comma

How urgent is CVE-2026-97205?

Priority 56/100. High severity; Covered by 3 security sources; Remotely exploitable, no login, no user action; On your watchlist

Software pages

nginx vulnerabilities

References

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