CVE-2026-95101: F5 Nginx Open Source

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remote attackers to inject data in the proxied request.  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 products

• F5 Nginx Open Source: from 1.31.0, before 1.31.7 (fixed in 1.31.7); from 1.30.0, before 1.30.6 (fixed in 1.30.6); from 1.25.0
• F5 Nginx Plus: from 37.1.0, before 37.2.0.1 (fixed in 37.2.0.1); from 37.0.0, before 37.0.7.1 (fixed in 37.0.7.1); from R36; from R35; from R34; from R33

Published 2026-10-14. Last modified 2026-10-15.