{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-102992",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-29T20:46:08.334Z",
        "datePublished": "2026-09-30T19:50:18.036Z",
        "dateUpdated": "2026-09-30T20:47:49.562Z"
    },
    "containers": {
        "cna": {
            "title": "piscina: Prototype-pollution gadget in ThreadPool.options allows RCE via execArgv / loadBalancer / env",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1321",
                            "lang": "en",
                            "description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 9.2,
                        "baseSeverity": "CRITICAL",
                        "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",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx"
                },
                {
                    "name": "https://github.com/piscinajs/piscina/commit/0cb12fca37f526065b072592afe954574dcc656f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/piscinajs/piscina/commit/0cb12fca37f526065b072592afe954574dcc656f"
                },
                {
                    "name": "https://github.com/piscinajs/piscina/commit/2f69f67159a0e48b38fd61fa4a91c2fdc19fff72",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/piscinajs/piscina/commit/2f69f67159a0e48b38fd61fa4a91c2fdc19fff72"
                },
                {
                    "name": "https://github.com/piscinajs/piscina/commit/5be7bbb19e3787bb698862cd516121a578d690f7",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/piscinajs/piscina/commit/5be7bbb19e3787bb698862cd516121a578d690f7"
                },
                {
                    "name": "https://github.com/piscinajs/piscina/commit/bebbda255c2981cecddd36b171b94be2fd41c9a6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/piscinajs/piscina/commit/bebbda255c2981cecddd36b171b94be2fd41c9a6"
                },
                {
                    "name": "https://github.com/piscinajs/piscina/releases/tag/v4.9.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/piscinajs/piscina/releases/tag/v4.9.4"
                },
                {
                    "name": "https://github.com/piscinajs/piscina/releases/tag/v5.3.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/piscinajs/piscina/releases/tag/v5.3.2"
                },
                {
                    "name": "https://github.com/piscinajs/piscina/releases/tag/v6.0.0-rc.5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/piscinajs/piscina/releases/tag/v6.0.0-rc.5"
                }
            ],
            "affected": [
                {
                    "vendor": "piscinajs",
                    "product": "piscina",
                    "versions": [
                        {
                            "version": "< 4.9.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.0.0, < 5.3.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 6.0.0-rc.1, < 6.0.0-rc.5",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-30T19:50:18.036Z"
            },
            "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."
                }
            ],
            "source": {
                "advisory": "GHSA-67c8-pqhq-4rmx",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-30T20:47:28.974211Z",
                                "id": "CVE-2026-102992",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-30T20:47:49.562Z"
                }
            }
        ]
    }
}