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Critical

Unauthenticated Command Injection via kubeconfig Username in che-machine-exec

Type: advisorySources: Official CVE List

The che-machine-exec service constructs a shell command by concatenating user-controlled input (the username and namespace fields from the /exec/init and /exec/config JSON endpoints) into a double-quoted sh -c "echo "..." > ..." invocation without any escaping. When che-machine-exec is run with authentication disabled (its default), any network-reachable attacker can achieve remote code execution in containers che-machine-exec is configured to access, via shell command substitution ($(...) or backticks).

Products
Eclipse Che
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-114278
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 05:27 UTC · Revision 1

Source evidence

Unauthenticated Command Injection via kubeconfig Username in che-machine-exec

core-cve · Original source

Published 28 Oct 2026, 11:55 UTC

The che-machine-exec service constructs a shell command by concatenating user-controlled input (the username and namespace fields from the /exec/init and /exec/config JSON endpoints) into a double-quoted sh -c "echo "..." > ..." invocation without any escaping. When che-machine-exec is run with authentication disabled (its default), any network-reachable attacker can achieve remote code execution in containers che-machine-exec is configured to access, via shell command substitution ($(...) or backticks).

cve:CVE-2026-114278

Eclipse Che

Fixed versions: Not specified

Complete source record
{
  "id": "343f0a69a87ec58c73a55ef4ac90e4e72549d026edfcae234245e9228df16578",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-114278",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Unauthenticated Command Injection via kubeconfig Username in che-machine-exec",
    "summary": "The che-machine-exec service constructs a shell command by concatenating user-controlled input (the username and namespace fields from the /exec/init and /exec/config JSON endpoints) into a double-quoted sh -c \"echo \"...\" > ...\" invocation without any escaping. When che-machine-exec is run with authentication disabled (its default), any network-reachable attacker can achieve remote code execution in containers che-machine-exec is configured to access, via shell command substitution ($(...) or backticks).",
    "evidence": "cve:CVE-2026-114278",
    "products": [
      {
        "name": {
          "value": "Eclipse Che",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-114278",
      "aliases": [
        "CVE-2026-114278"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 9.8,
            "attackVector": "NETWORK",
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "integrityImpact": "HIGH",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "HIGH"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Eclipse Foundation",
          "product": "Eclipse Che",
          "versions": [
            {
              "status": "affected",
              "version": "7.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "7.122.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-28T11:55:05.600Z",
      "provider": "cve",
      "references": [
        "https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/359",
        "https://github.com/eclipse-che/che-machine-exec/commit/a78541c29e5f48fd59a49cf206bc0e507628bd23",
        "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/476"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
          "shortName": "eclipse",
          "dateUpdated": "2026-10-28T11:55:05.600Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-114278",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 432230,
  "published_at": "2026-10-28T11:55:05.6+00:00"
}