# CVE-2026-97205: NGINX ngx_http_core_module vulnerability

> CVE-2026-97205: NGINX ngx_http_core_module vulnerability. CVSS 8.1 (CVSS 3.1), named in 2 status incident(s).

Canonical: https://rewindex.com/cve/CVE-2026-97205
Last updated: 2026-10-15T11:18:08Z

- Published: 2026-10-14 14:40 UTC · Updated: 2026-10-15 11:18 UTC · Assigner: f5
- CVSS: 8.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: n/a
- CISA KEV: no
- CWE: CWE-416

## 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 vendors and products

- F5: NGINX Open Source
- F5: NGINX Plus

## Status incidents that name it

- 2026-10-22 20:17 UTC [Akamai: Customer Security Advisory: Critical F5/NGINX Out-of-Band Vulnerabilities](https://rewindex.com/company/akamai/incidents/whj5crxg5ft5.md) (says not affected, matched “not vulnerable” elsewhere in the notice): “…continues to investigate the potential impact of the recently published F5/NGINX vulnerabilities (CVE-2026-15176, CVE-2026-97205, and CVE-2026-93479) across our platform and infrastructure. Customers and partners with a valid Control Center login…”
- 2026-10-22 20:08 UTC [Linode (Akamai): Customer Security Advisory: Critical F5/NGINX Out-of-Band Vulnerabilities](https://rewindex.com/company/linode-akamai/incidents/8dqqkh4d9y2c.md) (names this CVE): “…Out-of-Band Vulnerabilities Akamai is aware of the recently published F5/NGINX vulnerabilities (CVE-2026-15176, CVE-2026-97205, and CVE-2026-93479), and our teams are actively investigating their potential impact across our platform and…”

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-97205)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-97205)
- [https://my.f5.com/manage/s/article/K000162608](https://my.f5.com/manage/s/article/K000162608)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-97205 · Markdown: https://rewindex.com/cve/CVE-2026-97205.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-97205 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:01:00.464Z