High 8.1Published Oct 14, 2026

CVE-2026-97205NGINX ngx_http_core_module vulnerability

Updated under an hour ago (2026-10-19 05:50 UTC)

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It affects F5 NGINX Plus and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.44%, higher than 37% of scored CVEs.

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Every CVE for F5 NGINX Plus

Exploited in the last 30 days

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.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.44% (percentile 37)
Assigned by: f5
NVD analysis: Awaiting Analysis
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

F5 NGINX Plus f5:nginx_plus (from the name)	from 37.1.0 before 37.1.0.1; from 37.0.0 before 37.0.5.1; from R36; from R35; from R34; from R33	CNA record
F5 NGINX Open Source f5:nginx_open_source (from the name)	from 1.31.0 before 1.31.7; from 1.30.0 before 1.30.6	CNA record

References

https://my.f5.com/manage/s/article/K000162608vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.