CVE-2026-46519
CVE-2026-46519 · mcp-server-kubernetes Affected By Tool Access Control Bypass: Presentation-Layer Filtering Without Execution-Layer Enforcement
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.8 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
mcp-server-kubernetes
- Versions
- < 3.6.0: Affected
No fix published
mcp-server-kubernetes npm
- Affected ranges
- SEMVER: < 3.6.0
Update to 3.6.0