FKIE_CVE-2026-55094

Vulnerability from fkie_nvd - Published: 2026-09-30 18:18 - Updated: 2026-09-30 20:17
Severity
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
Taskcluster is the task execution framework that supports Mozilla's continuous integration and release processes. Prior to version 100.3.0, Taskcluster is vulnerable to unauthenticated RCE on Taskcluster deployments with an anonymous role that exposes the GraphQL endpoint and parses filter arguments using the sift library. This issue has been patched in version 100.3.0.
References
security-advisories@github.comhttps://bugzilla.mozilla.org/show_bug.cgi?id=2045091
security-advisories@github.comhttps://github.com/taskcluster/taskcluster/commit/a1b0154b8235937657c2ded127f193b564e2334b
security-advisories@github.comhttps://github.com/taskcluster/taskcluster/issues/8716
security-advisories@github.comhttps://github.com/taskcluster/taskcluster/pull/8718
security-advisories@github.comhttps://github.com/taskcluster/taskcluster/releases/tag/v100.3.0
security-advisories@github.comhttps://github.com/taskcluster/taskcluster/security/advisories/GHSA-ccv5-c45x-2q38
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "taskcluster",
          "vendor": "taskcluster",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 100.3.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Taskcluster is the task execution framework that supports Mozilla\u0027s continuous integration and release processes. Prior to version 100.3.0, Taskcluster is vulnerable to unauthenticated RCE on Taskcluster deployments with an anonymous role that exposes the GraphQL endpoint and parses filter arguments using the sift library. This issue has been patched in version 100.3.0."
    }
  ],
  "id": "CVE-2026-55094",
  "lastModified": "2026-09-30T20:17:32.590",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "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:N/VA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-55094",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-30T19:12:04.595464Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-30T18:18:37.387",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2045091"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/taskcluster/taskcluster/commit/a1b0154b8235937657c2ded127f193b564e2334b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/taskcluster/taskcluster/issues/8716"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/taskcluster/taskcluster/pull/8718"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/taskcluster/taskcluster/releases/tag/v100.3.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/taskcluster/taskcluster/security/advisories/GHSA-ccv5-c45x-2q38"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-94"
        },
        {
          "lang": "en",
          "value": "CWE-95"
        },
        {
          "lang": "en",
          "value": "CWE-250"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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