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CVE-2026-61459

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dcdc5a1691ec846457dfd0d90574319d1de8d07008081eb5d2efcf1b0e82c92a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/mcp-server-kubernetes","product":"mcp-server-kubernetes","repo":"https://github.com/Flux159/mcp-server-kubernetes","vendor":"Flux159","versions":[{"lessThan":"3.9.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-88","description":"Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/Flux159/mcp-server-kubernetes/commit/d7890f50a4567bf5d9842541ba6f41e180227f9a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/references/3
{"name":"Researcher Disclosure","tags":["exploit","technical-description"],"url":"https://github.com/Flux159/mcp-server-kubernetes/issues/328"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/references/1
{"name":"Pull Request","tags":["issue-tracking"],"url":"https://github.com/Flux159/mcp-server-kubernetes/pull/329"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/references/2
{"name":"Release Notes","tags":["release-notes"],"url":"https://github.com/Flux159/mcp-server-kubernetes/releases/tag/3.9.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/mcp-server-kubernetes-argument-injection-via-kubectl-structured-tools"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cba18e5fe9e6609f94fd9260e60a6c70684abbb3fb41eb933d201d5c57846fa2 · sha256:d255be149fc8b6b4… · /containers/cna/references/4

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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