CVE-2026-40460
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
F5 Nginx Gateway Fabric
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-290CWE-290
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| f5 nginx_gateway_fabric | 1.3.0 ≤ v ≤ 1.6.2, 2.0.0 ≤ v ≤ 2.6.0 | — |
| f5 dos | 4.3.0 ≤ v ≤ 4.7.0, 4.8.0 | — |
| f5 nginx_ingress_controller | 3.5.0 ≤ v ≤ 3.7.2, 4.0.0 ≤ v ≤ 4.0.1, 5.0.0 ≤ v ≤ 5.4.2 | — |
| f5 nginx_instance_manager | 2.16.0 ≤ v ≤ 2.22.0 | — |
| f5 nginx_open_source | 1.25.0 ≤ v ≤ 1.30.0 | — |
| f5 nginx_plus | r32 ≤ v ≤ r36 | — |
| f5 waf | 4.9.0 ≤ v ≤ 4.16.0, 5.1.0 ≤ v ≤ 5.8.0, 5.9.0 ≤ v ≤ 5.12.1 | — |
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