CVE-2026-32682: CWE-129 Improper Validation of Array Index in F5 NGINX Gateway Fabric
CVE-2026-32682 is a medium severity vulnerability in F5 NGINX Gateway Fabric version 1.3.0. It involves improper validation of array indexes (CWE-129) when the product is configured using GRPCRoutes. An authenticated remote attacker with permission to create or modify GRPCRoute resources can cause the control plane to terminate by submitting crafted GRPCRoute configurations containing backendRef filters. No patch or official remediation is currently documented.
AI Analysis
Technical Summary
This vulnerability in F5 NGINX Gateway Fabric 1.3.0 arises from improper validation of array indexes in the handling of GRPCRoute configurations. Specifically, when GRPCRoutes are configured with backendRef filters, an authenticated attacker authorized to create or modify these resources can trigger a control plane termination (denial of service). The vulnerability is tracked as CWE-129. There is no vendor advisory indicating an available patch or fix, and the product is not a cloud service, so remediation depends on vendor updates or configuration changes.
Potential Impact
The impact of this vulnerability is denial of service due to control plane termination. It does not affect confidentiality or integrity but causes availability disruption of the NGINX Gateway Fabric control plane. Exploitation requires authenticated access with permissions to create or modify GRPCRoute resources. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is documented, users should restrict permissions to create or modify GRPCRoute resources to trusted administrators only and monitor vendor communications for updates.
CVE-2026-32682: CWE-129 Improper Validation of Array Index in F5 NGINX Gateway Fabric
Description
CVE-2026-32682 is a medium severity vulnerability in F5 NGINX Gateway Fabric version 1.3.0. It involves improper validation of array indexes (CWE-129) when the product is configured using GRPCRoutes. An authenticated remote attacker with permission to create or modify GRPCRoute resources can cause the control plane to terminate by submitting crafted GRPCRoute configurations containing backendRef filters. No patch or official remediation is currently documented.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/f5/nginx-gateway-fabricRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in F5 NGINX Gateway Fabric 1.3.0 arises from improper validation of array indexes in the handling of GRPCRoute configurations. Specifically, when GRPCRoutes are configured with backendRef filters, an authenticated attacker authorized to create or modify these resources can trigger a control plane termination (denial of service). The vulnerability is tracked as CWE-129. There is no vendor advisory indicating an available patch or fix, and the product is not a cloud service, so remediation depends on vendor updates or configuration changes.
Potential Impact
The impact of this vulnerability is denial of service due to control plane termination. It does not affect confidentiality or integrity but causes availability disruption of the NGINX Gateway Fabric control plane. Exploitation requires authenticated access with permissions to create or modify GRPCRoute resources. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is documented, users should restrict permissions to create or modify GRPCRoute resources to trusted administrators only and monitor vendor communications for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- f5
- Date Reserved
- 2026-06-17T16:35:56.342Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a33019af198dc38c1fe193c
Added to database: 06/17/2026, 20:20:42 UTC
Last enriched: 06/24/2026, 20:56:34 UTC
Last updated: 08/01/2026, 07:17:59 UTC
Views: 92
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