Paper/Archive/CVE-2026-97205

CVE-2026-97205

F5 NGINX Plus — NGINX ngx_http_core_module vulnerability

CVSS 9.2 (CNA)9.2 / 10 × 3027.6 Not in CISA KEV+300.0 EPSS percentile 57.6.576 × 2011.5 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

NGINX Plus37.1.0 – < 37.1.0.137.1.0.1CNA

NGINX Plus37.0.0 – < 37.0.5.137.0.5.1CNA

NGINX PlusR36–CNA

NGINX PlusR35–CNA

NGINX PlusR34–CNA

NGINX PlusR33–CNA

NGINX Open Source1.31.0 – < 1.31.71.31.7CNA

NGINX Open Source1.30.0 – < 1.30.61.30.6CNA

Scores by source

f5 (CNA)9.2CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

f5 (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorymy.f5.com/manage/s/article/K000162608