CVE-2026-32682
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
A vulnerability in NGINX Gateway Fabric allows an authenticated remote attacker with permission to create or modify GRPCRoute resources to cause the control plane to terminate by sending specially crafted GRPCRoute configurations containing backendRef filters.
Risk Assessment
The risk is a potential DoS attack on the NGINX Gateway Fabric control plane, which can disrupt services managed by the gateway and impact application availability.
Recommendation
It is recommended to immediately update NGINX Gateway Fabric to the latest available version containing a fix for this vulnerability, and restrict permissions to create or modify GRPCRoute resources to trusted users only.
Other vulnerabilities in NGINX Gateway Fabric
See all- CVE-2026-50107High
In NGINX Plus or NGINX Open Source configured as the data plane for NGINX Gateway Fabric, an injection vulnerability exists in the NGINX configuration generator component. User-supplied string values from the NginxProxy Custom Resource Definition access log format setting are rendered without sanitization, allowing for the injection of arbitrary NGINX configuration directives.
- CVE-2026-11311High
In NGINX Gateway Fabric, when NGINX Plus is configured as the data plane, an injection vulnerability exists in the NGINX configuration generator component. User-supplied string values from the serverTokens field of the NginxProxy Custom Resource Definition and the extraAuthArgs field of the AuthenticationFilter Custom Resource Definition are rendered directly into NGINX configuration templates without sanitization or escaping. An authenticated attacker with permission to create or modify these Custom Resource Definitions may inject arbitrary NGINX configuration directives.
Original NVD description (English source)
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.