MSRXCVE-2026-97205
CVE-2026-97205
NGINX ngx_http_core_module vulnerability
CVSS 4.0 · CNA
chance of exploitation in the next 30 days (EPSS; higher than 57% of CVEs)
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.
Scores
Affected products
- F5 NGINX Plus: 37.1.0 to < 37.1.0.1; 37.0.0 to < 37.0.5.1; R36 to < *; R35 to < *; R34 to < *; R33 to < *
- F5 NGINX Open Source: 1.31.0 to < 1.31.7; 1.30.0 to < 1.30.6
Weakness: CWE-416
1 references (advisories, patches, write-ups)
- https://my.f5.com/manage/s/article/K000162608 · vendor-advisory
Sources: CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.