CVE-2026-61459GHSA-WMG3-H8MF-WGVRPYSEC-2026-3685
MCP Server Kubernetes < 3.9.0 Argument Injection via kubectl Structured Tools
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 3.9.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Flux159 mcp-server-kubernetes
fixed in 3.9.0
- mcp-server-kubernetesnpm
fixed in 3.9.0
- mcp-server-kubernetesPyPI
fixed in 3.9.0