Data Injection Vulnerability in NGINX Plus and NGINX Open Source
CVE-2026-95101

6.9MEDIUM

Key Information:

Vendor

F5
Status
Nginx Plus
Nginx Open Source
Vendor
CVE Published:
14 October 2026

What is CVE-2026-95101?

NGINX Plus and NGINX Open Source are vulnerable due to an issue in the ngx_http_v3_module module. When the proxy_request_buffering directive is enabled and HTTP/3 is utilized, this vulnerability could allow an unauthenticated attacker to inject malicious data into the proxied request. It's important to note that this is a data plane problem, with no exposure on the control plane, which could lead to unauthorized manipulation of request data.

Affected Version(s)

NGINX Open Source 1.31.0 < 1.31.7

NGINX Open Source 1.30.0 < 1.30.6

NGINX Open Source 1.25.0

References

https://my.f5.com/manage/s/article/K000162613
vendor-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

F5 acknowledges Hansol Lee (rabbit2747) of GOTROOT for bringing this issue to our attention and following the highest standards of coordinated disclosure.
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