CVE-2026-119287 (GCVE-0-2026-119287)

Vulnerability from cvelistv5 – Published: 2026-10-30 15:39 – Updated: 2026-10-30 15:39
VLAI
Title
Zuke: Command-form registry descriptors bypass the MCP launch policy
Summary
Zuke is a code-first, strongly typed build automation system for Deno. Prior to 1.51.0, the @zuke/core MCP registry mode accepts command-form registry descriptors without applying the ZUKE_REGISTRY_LAUNCH_HOSTS authorization enforced for remote module descriptors. When zuke mcp --registry --allow-run reads a registry writable by another party and a run-capable caller invokes the affected tool, the registry writer can choose the program and arguments executed with the operator's environment and workspace access. The --allow-run and --protect name globs do not contain the issue because the descriptor supplies those names, and the optional destructive confirmation displays a description controlled by the same writer. The local default registry populated only through zuke register is not affected because that command writes module-form descriptors. This issue is fixed in version 1.51.0.
Severity
8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8083 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
zuke-build zuke Affected: < 1.51.0
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "zuke",
          "vendor": "zuke-build",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.51.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Zuke is a code-first, strongly typed build automation system for Deno. Prior to 1.51.0, the @zuke/core MCP registry mode accepts command-form registry descriptors without applying the ZUKE_REGISTRY_LAUNCH_HOSTS authorization enforced for remote module descriptors. When zuke mcp --registry --allow-run reads a registry writable by another party and a run-capable caller invokes the affected tool, the registry writer can choose the program and arguments executed with the operator\u0027s environment and workspace access. The --allow-run and --protect name globs do not contain the issue because the descriptor supplies those names, and the optional destructive confirmation displays a description controlled by the same writer. The local default registry populated only through zuke register is not affected because that command writes module-form descriptors. This issue is fixed in version 1.51.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T15:39:52.468Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/zuke-build/zuke/security/advisories/GHSA-2rmh-5cw4-33gr",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/zuke-build/zuke/security/advisories/GHSA-2rmh-5cw4-33gr"
        },
        {
          "name": "https://github.com/zuke-build/zuke/pull/542",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/zuke-build/zuke/pull/542"
        },
        {
          "name": "https://github.com/zuke-build/zuke/commit/4257b0bc5ef5e387a44f913349646d4baccd1654",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/zuke-build/zuke/commit/4257b0bc5ef5e387a44f913349646d4baccd1654"
        },
        {
          "name": "https://github.com/zuke-build/zuke/releases/tag/core-v1.51.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/zuke-build/zuke/releases/tag/core-v1.51.0"
        }
      ],
      "source": {
        "advisory": "GHSA-2rmh-5cw4-33gr",
        "discovery": "UNKNOWN"
      },
      "title": "Zuke: Command-form registry descriptors bypass the MCP launch policy"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-119287",
    "datePublished": "2026-10-30T15:39:52.468Z",
    "dateReserved": "2026-10-29T18:50:28.065Z",
    "dateUpdated": "2026-10-30T15:39:52.468Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-119287",
      "date": "2026-10-31",
      "epss": "0.00223",
      "percentile": "0.12917"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "zuke",
                "vendor": "zuke-build",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.51.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Zuke is a code-first, strongly typed build automation system for Deno. Prior to 1.51.0, the @zuke/core MCP registry mode accepts command-form registry descriptors without applying the ZUKE_REGISTRY_LAUNCH_HOSTS authorization enforced for remote module descriptors. When zuke mcp --registry --allow-run reads a registry writable by another party and a run-capable caller invokes the affected tool, the registry writer can choose the program and arguments executed with the operator\u0027s environment and workspace access. The --allow-run and --protect name globs do not contain the issue because the descriptor supplies those names, and the optional destructive confirmation displays a description controlled by the same writer. The local default registry populated only through zuke register is not affected because that command writes module-form descriptors. This issue is fixed in version 1.51.0."
          }
        ],
        "id": "CVE-2026-119287",
        "lastModified": "2026-10-30T17:13:54.187",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.0,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.1,
              "impactScore": 5.9,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-30T16:17:42.723",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/zuke-build/zuke/commit/4257b0bc5ef5e387a44f913349646d4baccd1654"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/zuke-build/zuke/pull/542"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/zuke-build/zuke/releases/tag/core-v1.51.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/zuke-build/zuke/security/advisories/GHSA-2rmh-5cw4-33gr"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-862"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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