Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-46519— mcp-server-kubernetes Affected By Tool Access Control Bypass: Presentation-Layer Filtering Without Execution-Layer Enforcement

Quick assessment

Affected
Flux159 mcp-server-kubernetes
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MCP Server Kubernetes是Suyog Sonwalkar个人开发者的一个用于kubernetes管理的MCP服务器。 MCP Server Kubernetes 3.6.0之前版本存在安全漏洞，该漏洞源于访问控制在工具发现层执行但未在执行层执行，导致任何知道工具名称的客户端都可以直接调用它，访问控制形同虚设。

CVSS 8.8 · High EPSS 0.60% · P47

Affected Version Matrix 1

VendorProduct Version RangeStatus
Flux159 mcp-server-kubernetes < 3.6.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-46519

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
mcp-server-kubernetes Affected By Tool Access Control Bypass: Presentation-Layer Filtering Without Execution-Layer Enforcement
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
MCP Server Kubernetes 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MCP Server Kubernetes是Suyog Sonwalkar个人开发者的一个用于kubernetes管理的MCP服务器。 MCP Server Kubernetes 3.6.0之前版本存在安全漏洞，该漏洞源于访问控制在工具发现层执行但未在执行层执行，导致任何知道工具名称的客户端都可以直接调用它，访问控制形同虚设。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Flux159 mcp-server-kubernetes < 3.6.0 -

II. Public POCs for CVE-2026-46519

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7734 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-46519

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-46519 (1)

Other References for CVE-2026-46519 (1)

IV. Related Vulnerabilities

Same product: mcp-server-kubernetes
Same vendor: Flux159
Same weakness: CWE-863

V. Comments for CVE-2026-46519

No comments yet

Leave a comment