nginx 1.25.0 < 1.30.6 / 1.31.x < 1.31.7 Request Body Injection

medium Nessus Plugin ID 371393

Synopsis

The remote web server is affected by a vulnerability.

Description

According to its Server response header, the installed version of nginx is 1.25.0 prior to 1.30.6 or 1.31.0 prior to 1.31.7. It is, therefore, affected by the following issue:

- 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. 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.
(CVE-2026-95101)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to nginx 1.30.6, 1.31.7 or later.

See Also

https://my.f5.com/manage/s/article/K000162613

https://www.cve.org/CVERecord?id=CVE-2026-95101

Plugin Details

Severity: Medium

ID: 371393

File Name: nginx-CVE-2026-95101.nasl

Version: 1.1

Type: Combined

Agent: unix

Family: Web Servers

Published: 10/23/2026

Updated: 10/23/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.2

Percentile: 50.36

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2026-95101

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/a:nginx:nginx

Required KB Items: Settings/ParanoidReport, installed_sw/nginx

Patch Publication Date: 10/14/2026

Vulnerability Publication Date: 10/14/2026

Reference Information

CVE: CVE-2026-95101

IAVA: 2026-A-1142