CVE-2026-46519
Received Received - Intake
Insecure Tool Execution Bypass in mcp-server-kubernetes

Publication date: 2026-06-11

Last updated on: 2026-06-11

Assigner: GitHub, Inc.

Description
mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management. Prior to version 3.6.0, mcp-server-kubernetes exposes three environment variables (ALLOW_ONLY_READONLY_TOOLS, ALLOW_ONLY_NON_DESTRUCTIVE_TOOLS, ALLOWED_TOOLS) documented as access controls for restricting which Kubernetes operations are available. These controls are enforced at the tool discovery layer (tools/list) but not at the execution layer (tools/call). Any client that knows a tool name can invoke it directly regardless of the configured restriction mode. The access control was effectively cosmetic. This issue has been patched in version 3.6.0.
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Meta Information
Published
2026-06-11
Last Modified
2026-06-11
Generated
2026-06-11
EPSS Evaluated
N/A
NVD
CVE-2026-46519
EUVD
EUVD-2026-36286
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
flux159 mcp-server-kubernetes to 3.6.0 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
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