FKIE_CVE-2026-102992

Vulnerability from fkie_nvd - Published: 2026-09-30 20:17 - Updated: 2026-09-30 21:17
Severity
9.2 (Critical) - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
piscina is a node.js worker pool implementation. Prior to 4.9.4, 5.3.2, and 6.0.0-rc.5, Piscina stores ThreadPool.options in src/index.ts as a plain object that inherits from Object.prototype. Applications with a separate prototype-pollution primitive can therefore supply inherited values for security-sensitive options that do not have own defaults. An inherited execArgv value is passed to the Node.js Worker constructor and can preload attacker-controlled code in worker threads, an inherited loadBalancer function can execute during task scheduling, and inherited env values can alter worker environments. This issue is fixed in versions 4.9.4, 5.3.2, and 6.0.0-rc.5.
References
security-advisories@github.comhttps://github.com/piscinajs/piscina/commit/0cb12fca37f526065b072592afe954574dcc656f
security-advisories@github.comhttps://github.com/piscinajs/piscina/commit/2f69f67159a0e48b38fd61fa4a91c2fdc19fff72
security-advisories@github.comhttps://github.com/piscinajs/piscina/commit/5be7bbb19e3787bb698862cd516121a578d690f7
security-advisories@github.comhttps://github.com/piscinajs/piscina/commit/bebbda255c2981cecddd36b171b94be2fd41c9a6
security-advisories@github.comhttps://github.com/piscinajs/piscina/releases/tag/v4.9.4
security-advisories@github.comhttps://github.com/piscinajs/piscina/releases/tag/v5.3.2
security-advisories@github.comhttps://github.com/piscinajs/piscina/releases/tag/v6.0.0-rc.5
security-advisories@github.comhttps://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "piscina",
          "vendor": "piscinajs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.9.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.0.0, \u003c 5.3.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 6.0.0-rc.1, \u003c 6.0.0-rc.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "piscina is a node.js worker pool implementation. Prior to 4.9.4, 5.3.2, and 6.0.0-rc.5, Piscina stores ThreadPool.options in src/index.ts as a plain object that inherits from Object.prototype. Applications with a separate prototype-pollution primitive can therefore supply inherited values for security-sensitive options that do not have own defaults. An inherited execArgv value is passed to the Node.js Worker constructor and can preload attacker-controlled code in worker threads, an inherited loadBalancer function can execute during task scheduling, and inherited env values can alter worker environments. This issue is fixed in versions 4.9.4, 5.3.2, and 6.0.0-rc.5."
    }
  ],
  "id": "CVE-2026-102992",
  "lastModified": "2026-09-30T21:17:06.450",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "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:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-102992",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-30T20:47:28.974211Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-30T20:17:27.080",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/commit/0cb12fca37f526065b072592afe954574dcc656f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/commit/2f69f67159a0e48b38fd61fa4a91c2fdc19fff72"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/commit/5be7bbb19e3787bb698862cd516121a578d690f7"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/commit/bebbda255c2981cecddd36b171b94be2fd41c9a6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/releases/tag/v4.9.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/releases/tag/v5.3.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/releases/tag/v6.0.0-rc.5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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