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CVE

CVE-2026-61459

MCP Server Kubernetes < 3.9.0 Argument Injection via kubectl Structured Tools
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CVE

CVE-2026-61459

MCP Server Kubernetes < 3.9.0 Argument Injection via kubectl Structured Tools

MCP Server Kubernetes before 3.9.0 contains an argument injection vulnerability in structured tools (kubectlget, kubectldescribe, kubectl_delete) that allows attackers to bypass the assertNoDangerousFlags security check by supplying resourceType and name parameters with leading dashes. Attackers can inject the --server flag to redirect kubectl commands to an attacker-controlled API server, causing the operator's bearer token to be transmitted externally and enabling full cluster compromise.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61459.json, https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0, https://nvd.nist.gov/vuln/detail/CVE-2026-61459, https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools, https://github.com/Flux159/mcp-server-kubernetes/pull/329, https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a, https://github.com/Flux159/mcp-server-kubernetes, https://github.com/Flux159/mcp-server-kubernetes/issues/328

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.02105%
EPSS Percentile
0.80323%
Introduced Version
0
Fix Available
d7890f50a4567bf5d9842541ba6f41e180227f9a

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