{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-70610",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-04T19:50:27.329Z",
        "datePublished": "2026-08-05T17:41:03.016Z",
        "dateUpdated": "2026-08-06T14:31:10.761Z"
    },
    "containers": {
        "cna": {
            "title": "Electron: contextBridge object copy honors prototype setters",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1321",
                            "lang": "en",
                            "description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.4,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4"
                },
                {
                    "name": "https://github.com/electron/electron/pull/51083",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/pull/51083"
                },
                {
                    "name": "https://github.com/electron/electron/pull/51084",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/pull/51084"
                },
                {
                    "name": "https://github.com/electron/electron/pull/51085",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/pull/51085"
                },
                {
                    "name": "https://github.com/electron/electron/pull/51086",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/pull/51086"
                },
                {
                    "name": "https://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713"
                },
                {
                    "name": "https://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd"
                },
                {
                    "name": "https://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55"
                },
                {
                    "name": "https://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737"
                },
                {
                    "name": "https://github.com/electron/electron/releases/tag/v39.8.9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/releases/tag/v39.8.9"
                },
                {
                    "name": "https://github.com/electron/electron/releases/tag/v40.9.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/releases/tag/v40.9.2"
                },
                {
                    "name": "https://github.com/electron/electron/releases/tag/v41.2.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/releases/tag/v41.2.2"
                },
                {
                    "name": "https://github.com/electron/electron/releases/tag/v42.0.0-beta.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/electron/electron/releases/tag/v42.0.0-beta.4"
                }
            ],
            "affected": [
                {
                    "vendor": "electron",
                    "product": "electron",
                    "versions": [
                        {
                            "version": "< 39.8.9",
                            "status": "affected"
                        },
                        {
                            "version": ">= 40.0.0-alpha.1, < 40.9.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 41.0.0-alpha.1, < 41.2.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 42.0.0-alpha.1, < 42.0.0-beta.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-05T17:41:03.016Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4, objects copied across the contextBridge boundary from untrusted content could carry an attacker-influenced prototype, enabling prototype-pollution-style attacks against preload code despite context isolation being enabled. Apps are only affected if their preload code accepts object arguments from untrusted content and reads properties from them without own-property checks, while apps that only accept primitive arguments or validate object arguments are not affected. This issue is fixed in 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4."
                }
            ],
            "source": {
                "advisory": "GHSA-ff2p-hmqr-hxm4",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-06T14:30:58.717300Z",
                                "id": "CVE-2026-70610",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-06T14:31:10.761Z"
                }
            }
        ]
    }
}