CVE-2026-40460
MEDIUM EPSS 30.4%
Published May 13, 20261mo ago · Modified Jun 29, 20261d ago
6.9 CVSS 4.0
Published May 13, 2026 1mo ago
Last Modified Jun 29, 2026 1d ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
30.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-290
Affected Products 13
| Vendor | Product | Version | Range |
|---|---|---|---|
| f5 | dos | * | ≥4.3.0 – ≤4.7.0 |
| f5 | dos | 4.8.0 | any |
| f5 | nginx_gateway_fabric | * | ≥1.3.0 – ≤1.6.2 |
| f5 | nginx_gateway_fabric | * | ≥2.0.0 – ≤2.6.0 |
| f5 | nginx_ingress_controller | * | ≥3.5.0 – ≤3.7.2 |
| f5 | nginx_ingress_controller | * | ≥4.0.0 – ≤4.0.1 |
| f5 | nginx_ingress_controller | * | ≥5.0.0 – ≤5.4.2 |
| f5 | nginx_instance_manager | * | ≥2.16.0 – ≤2.22.0 |
| f5 | nginx_open_source | * | ≥1.25.0 – ≤1.30.0 |
| f5 | nginx_plus | * | ≥r32 – ≤r36 |
| f5 | waf | * | ≥4.9.0 – ≤4.16.0 |
| f5 | waf | * | ≥5.1.0 – ≤5.8.0 |
| f5 | waf | * | ≥5.9.0 – ≤5.12.1 |
References 1
- my.f5.com https://my.f5.com/manage/s/article/K000161068
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.