CVE-2026-97205

High

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.

SeverityHigh
CVSS8.1
Exploit probability—
ProductMicrosoft Azl3 Nginx
PublishedOct 14, 2026
First seenOct 14, 2026

How to fix

Affected products

ProductAffected versionsFixed in
microsoft azl3_nginx_1.30.4-1No range specified—

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CVE-2026-97205 · Microsoft Azl3 Nginx · Dark Radar