{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-55076",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-16T14:33:35.711Z",
        "datePublished": "2026-07-07T22:23:26.179Z",
        "dateUpdated": "2026-07-08T14:03:39.329Z"
    },
    "containers": {
        "cna": {
            "title": "Coder's OIDC email_verified type coercion bypass enables account takeover via unverified email linking",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-287",
                            "lang": "en",
                            "description": "CWE-287: Improper Authentication",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-704",
                            "lang": "en",
                            "description": "CWE-704: Incorrect Type Conversion or Cast",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.4,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/coder/coder/security/advisories/GHSA-75vm-6w67-gwvp",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/coder/coder/security/advisories/GHSA-75vm-6w67-gwvp"
                },
                {
                    "name": "https://github.com/coder/coder/pull/25712",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coder/coder/pull/25712"
                },
                {
                    "name": "https://github.com/coder/coder/pull/25713",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coder/coder/pull/25713"
                },
                {
                    "name": "https://github.com/coder/coder/releases/tag/v2.29.17",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coder/coder/releases/tag/v2.29.17"
                },
                {
                    "name": "https://github.com/coder/coder/releases/tag/v2.32.7",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coder/coder/releases/tag/v2.32.7"
                },
                {
                    "name": "https://github.com/coder/coder/releases/tag/v2.33.8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coder/coder/releases/tag/v2.33.8"
                },
                {
                    "name": "https://github.com/coder/coder/releases/tag/v2.34.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/coder/coder/releases/tag/v2.34.2"
                }
            ],
            "affected": [
                {
                    "vendor": "coder",
                    "product": "coder",
                    "versions": [
                        {
                            "version": ">= 2.34.0, < 2.34.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.33.0, < 2.33.8",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.30.0, < 2.32.7",
                            "status": "affected"
                        },
                        {
                            "version": "< 2.29.17",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-07T22:23:26.179Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, Coder's OIDC callback checked `email_verified` with a direct Go `bool` type assertion. When an IdP returned the claim as a non-boolean (for example the string `\"false\"`) or omitted it, the assertion failed open and the email was treated as verified. Combined with an unconditional email-based account fallback, this enabled account takeover. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 coerces `email_verified` across bool, string and numeric types (fail-closed) and blocks the email fallback when the matched user already has a different linked IdP subject. As a workaround, ensure the IdP returns `email_verified` as a native JSON boolean. The email-fallback linking issue has no configuration workaround; upgrading is required."
                }
            ],
            "source": {
                "advisory": "GHSA-75vm-6w67-gwvp",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-08T14:03:30.696230Z",
                                "id": "CVE-2026-55076",
                                "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": "2026-07-08T14:03:39.329Z"
                }
            }
        ]
    }
}