CVE-2026-40460

Published: May 13, 2026Modified: Jun 29, 2026

6.9

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/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

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/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:XShow less

Source: f5sirt@f5.com (Secondary)

Description

When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate limiting. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected (13)

Products: F5: Dos, Nginx Gateway Fabric, Nginx Ingress Controller, Nginx Instance Manager, Nginx Open Source, Nginx Plus, Waf

7 products

Dos

Nginx Gateway Fabric

Nginx Ingress Controller

Nginx Instance Manager

Nginx Open Source

Nginx Plus

Waf

Configuration A

13 vulnerable

Vulnerable Software	Affected Versions
F5 Dos	4.3.0 ≤ version ≤ 4.7.0
F5 Dos	Version 4.8.0
F5 Nginx Gateway Fabric	1.3.0 ≤ version ≤ 1.6.2
F5 Nginx Gateway Fabric	2.0.0 ≤ version ≤ 2.6.0
F5 Nginx Ingress Controller	3.5.0 ≤ version ≤ 3.7.2
F5 Nginx Ingress Controller	4.0.0 ≤ version ≤ 4.0.1
F5 Nginx Ingress Controller	5.0.0 ≤ version ≤ 5.4.2
F5 Nginx Instance Manager	2.16.0 ≤ version ≤ 2.22.0
F5 Nginx Open Source	1.25.0 ≤ version ≤ 1.30.0
F5 Nginx Plus	r32 ≤ version ≤ r36
F5 Waf	4.9.0 ≤ version ≤ 4.16.0
F5 Waf	5.1.0 ≤ version ≤ 5.8.0
F5 Waf	5.9.0 ≤ version ≤ 5.12.1

Related CWEs

CWE-290

Authentication Bypass by Spoofing

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

References (1)

https://my.f5.com/manage/s/article/K000161068

Source: f5sirt@f5.com

Vendor Advisory

Timeline

No history available yet.