CVEvulnerability
CVE-2026-61459
9.3 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-10
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.3 CRITICAL — 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
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-88
Description
MCP Server Kubernetes before 3.9.0 contains an argument injection vulnerability in structured tools (kubectl_get, kubectl_describe, 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.
Affected configurations
• suyogs mcp-server-kubernetes (< 3.9.0)
Related
Weakness · CWE (1)
- CWE-88 Improper Neutralization of Argument Delimiters in a Command weakness
References
- https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a Patch
- https://github.com/Flux159/mcp-server-kubernetes/issues/328 Issue Tracking, Exploit, Mitigation, Vendor Advisory
- https://github.com/Flux159/mcp-server-kubernetes/pull/329 Issue Tracking, Patch
- https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0 Release Notes
- https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools Third Party Advisory