Vulnerability · Published Oct 14, 2026 · Assigned by f5
CVE-2026-95101NGINX ngx_http_v3_module vulnerability
Medium 5.3
In plain English
A medium-severity security flaw in NGINX Open Source from F5. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | nginx | 1.30.6-r0 | ALPINE-CVE-2026-95101 |
| Debian:12 | nginx | no fix listed | DEBIAN-CVE-2026-95101 |
| Debian:13 | nginx | 1.26.3-3+deb13u10 | DEBIAN-CVE-2026-95101 |
| Debian:14 | nginx | 1.30.4-8 | DEBIAN-CVE-2026-95101 |
| Ubuntu:22.04:LTS | nginx | 1.18.0-6ubuntu14.22 | USN-8955-1 |
| Ubuntu:24.04:LTS | nginx | 1.24.0-2ubuntu7.19 | USN-8955-1 |
| Ubuntu:26.04:LTS | nginx | 1.28.3-2ubuntu1.12 | USN-8955-1 |
| Ubuntu:26.04:LTS | nginx | 1.28.3-2ubuntu1.12 | UBUNTU-CVE-2026-95101 |
| Ubuntu:26.10 | nginx | 1.30.4-7ubuntu1.1 | UBUNTU-CVE-2026-95101 |
| Ubuntu:26.10 | nginx | 1.30.4-7ubuntu1.1 | USN-8955-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| F5 | NGINX Plus | 37.1.0 – before 37.2.0.137.0.0 – before 37.0.7.1R36 – before *R35 – before *R34 – before *R33 – before * |
| F5 | NGINX Open Source | 1.31.0 – before 1.31.71.30.0 – before 1.30.61.25.0 – before * |
Weakness: CWE-172 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://my.f5.com/manage/s/article/K000162613 vendor-advisory