{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53515",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-09T17:30:33.456Z",
        "datePublished": "2026-07-15T17:27:00.291Z",
        "dateUpdated": "2026-07-15T19:30:08.165Z"
    },
    "containers": {
        "cna": {
            "title": "Better Auth: Privilege escalation via SSO provider registration: missing admin role check in @better-auth/sso",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-269",
                            "lang": "en",
                            "description": "CWE-269: Improper Privilege Management",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-285",
                            "lang": "en",
                            "description": "CWE-285: Improper Authorization",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-863",
                            "lang": "en",
                            "description": "CWE-863: Incorrect Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.1,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-gv74-j8m3-fg5f",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-gv74-j8m3-fg5f"
                },
                {
                    "name": "https://github.com/better-auth/better-auth/pull/9220",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/better-auth/better-auth/pull/9220"
                },
                {
                    "name": "https://github.com/better-auth/better-auth/commit/86765f1597378f5c3deed1b80ca91faac0a6bf00",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/better-auth/better-auth/commit/86765f1597378f5c3deed1b80ca91faac0a6bf00"
                },
                {
                    "name": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11"
                }
            ],
            "affected": [
                {
                    "vendor": "better-auth",
                    "product": "better-auth",
                    "versions": [
                        {
                            "version": ">= 1.2.10, < 1.6.11",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@better-auth",
                    "product": "sso",
                    "versions": [
                        {
                            "version": ">= 1.2.10, < 1.6.11",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-15T17:27:00.291Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin's POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row and does not require an owner or admin role, allowing attacker-controlled OIDC or SAML providers to drive /sso/callback/{providerId} organization provisioning. This issue is fixed in version 1.6.11."
                }
            ],
            "source": {
                "advisory": "GHSA-gv74-j8m3-fg5f",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-15T19:29:56.598355Z",
                                "id": "CVE-2026-53515",
                                "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": "2026-07-15T19:30:08.165Z"
                }
            }
        ]
    }
}