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Fencer Intel
medium 5.3

CVE-2026-95101 json

NGINX ngx_http_v3_module vulnerability

published 26d ago modified 19d ago also BIT-nginx-2026-95101 , BIT-nginx-gateway-2026-95101 , EUVD-2026-101119

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami nginx 1.29.0, 1.30.6, 1.31.7
  • bitnami nginx-gateway 2.2.1
  • F5 NGINX Plus 37.0.7.1, 37.2.0.1
  • F5 NGINX Open Source 1.30.6, 1.31.7
  • nginx Debian 13 1.26.3-3+deb13u10
  • nginx Debian 14 1.30.4-8

debian advisories DEBIAN-CVE-2026-95101

  • nginx Ubuntu 26.10 1.30.4-7ubuntu1.1
  • nginx Ubuntu 26.04 LTS 1.28.3-2ubuntu1.12

ubuntu advisories UBUNTU-CVE-2026-95101

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • nginx hummingbird 1 1.30.6-1.hum1
  • nginx-core hummingbird 1 1.30.6-1.hum1
  • nginx-mod-mail hummingbird 1 1.30.6-1.hum1
  • nginx-filesystem hummingbird 1 1.30.6-1.hum1
  • nginx-mod-stream hummingbird 1 1.30.6-1.hum1
  • nginx-all-modules hummingbird 1 1.30.6-1.hum1
  • nginx-mod-http-perl hummingbird 1 1.30.6-1.hum1
  • nginx-mod-http-geoip hummingbird 1 1.30.6-1.hum1

red hat advisories RHSA-2026:83427

  • nginx openSUSE Tumbleweed 1.31.7-1.1

opensuse advisories openSUSE-SU-2026:12143-1

  • nginx Alpine 3.24 1.30.6-r0

alpine advisories ALPINE-CVE-2026-95101

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • nginx Azure Linux 3.0 1.30.6-1

azure linux advisories AZL-108449

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2026-95101 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-95101 updated cvss 5.3

nginx: nginx: Data injection in proxied requests via HTTP/3 request buffering

  • Red Hat Enterprise Linux 9 nginx, nginx-core, nginx-mod-mail, nginx-filesystem, nginx-mod-stream, nginx-all-modules, +3 more Red Hat Enterprise Linux 10 nginx
    affected: workaround, no fix available “Disable HTTP/3 by removing the quic parameter from all listen directives, or configure proxy_request_buffering off; within the relevant http, server, or location blocks.”
  • Red Hat Hardened Images nginx 1.30.6-1.hum1, nginx-core 1.30.6-1.hum1, nginx-mod-mail 1.30.6-1.hum1, nginx-filesystem 1.30.6-1.hum1, nginx-mod-stream 1.30.6-1.hum1, nginx-all-modules 1.30.6-1.hum1, +5 more
    fixed: vendor fix “Disable HTTP/3 by removing the quic parameter from all listen directives, or configure proxy_request_buffering off; within the relevant http, server, or location blocks.” RHSA-2026:83427
  • Red Hat Enterprise Linux 8 nginx, nginx-mod-mail, nginx-filesystem, nginx-mod-stream, nginx-all-modules, nginx-mod-http-perl, +2 more Red Hat Enterprise Linux 9 nginx, nginx-core, nginx-mod-mail, nginx-filesystem, nginx-mod-stream, nginx-all-modules, +3 more
    not affected: vulnerable code not present
  • Red Hat Hardened Images php 8.5.11-2.1.hum1
    not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
25d ago

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA 4.0 6.9 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
CNA 4.0 6.9 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
bitnami nginx
>=1.25.0, <1.29.0
>=1.30.0, <1.30.6
>=1.31.0, <1.31.7
1.29.0
1.30.6
1.31.7
bitnami nginx-gateway
>=1.25.0, <2.2.1
2.2.1

Affected products

  • F5 NGINX Plus
  • F5 NGINX Open Source

Classification

Weakness
  • CWE-172 Improper Encoding or Decoding of Data
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.