CVE-2026-32682: NGINX Gateway Fabric vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-17 · updated 2026-10-26
Weakness: CWE-129

Description

When NGINX Gateway Fabric is configured using GRPCRoutes, an authenticated, remote attacker with permission to create or modify GRPCRoute resources can cause the NGINX Gateway Fabric control plane to terminate by sending undisclosed GRPCRoute configurations containing backendRef filters. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

F5 NGINX Gateway Fabric: from 1.3.0 through 1.6.2; from 2.0.0 before 2.6.4 — fixed in 2.6.4

How to fix

Upgrade to a fixed version: F5 NGINX Gateway Fabric 2.6.4. Check the vendor advisory for mitigations.

References

https://my.f5.com/manage/s/article/K000161786

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