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{
    "url": "http://public2.vulnerablecode.io/api/packages/1014378?format=api",
    "purl": "pkg:npm/better-auth@1.4.8-beta.7",
    "type": "npm",
    "namespace": "",
    "name": "better-auth",
    "version": "1.4.8-beta.7",
    "qualifiers": {},
    "subpath": "",
    "is_vulnerable": true,
    "next_non_vulnerable_version": "1.4.9",
    "latest_non_vulnerable_version": "1.6.11",
    "affected_by_vulnerabilities": [
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/90021?format=api",
            "vulnerability_id": "VCID-2mgw-j7c3-dqbe",
            "summary": "Better Auth Has Two-Factor Authentication Bypass via Premature Session Caching (session.cookieCache)\n### Summary\n\nUnder certain configurations, sessions may be considered valid before two-factor authentication (2FA) is fully completed. This can allow access to authenticated routes without verifying the second factor.\n\n---\n\n### Description\n\nWhen two-factor authentication is enabled, the authentication flow correctly identifies users who require additional verification and defers full authentication until the second factor is completed.\n\nHowever, when `session.cookieCache` is enabled, the session generated during the initial sign-in step may be cached as valid **prior to 2FA verification**. Subsequent session lookups may then return this cached session without re-evaluating the 2FA requirement.\n\nThis results in a situation where session validity can be established before all authentication constraints are satisfied.\n\n---\n\n### Impact\n\nAn attacker (or user) with valid primary credentials may gain access to protected application routes without completing the required second authentication factor.\n\nAny application using `better-auth` with both two-factor authentication and session cookie caching enabled may be affected.\n\n---\n\n### Mitigation\n\n* Upgrade to a version of `better-auth` that includes the fix for this issue.\n* Ensure that session caching does not treat sessions as fully authenticated until all required authentication steps, including 2FA, are completed.\n* As a temporary workaround, disable `session.cookieCache` when using two-factor authentication.",
            "references": [
                {
                    "reference_url": "https://github.com/better-auth/better-auth",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "9.1",
                            "scoring_system": "cvssv4",
                            "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
                        },
                        {
                            "value": "CRITICAL",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/better-auth/better-auth"
                },
                {
                    "reference_url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-xg6x-h9c9-2m83",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "CRITICAL",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        },
                        {
                            "value": "9.1",
                            "scoring_system": "cvssv4",
                            "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
                        },
                        {
                            "value": "CRITICAL",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-xg6x-h9c9-2m83"
                },
                {
                    "reference_url": "https://github.com/advisories/GHSA-xg6x-h9c9-2m83",
                    "reference_id": "GHSA-xg6x-h9c9-2m83",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "CRITICAL",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/advisories/GHSA-xg6x-h9c9-2m83"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/111286?format=api",
                    "purl": "pkg:npm/better-auth@1.4.9",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/better-auth@1.4.9"
                }
            ],
            "aliases": [
                "GHSA-xg6x-h9c9-2m83"
            ],
            "risk_score": 4.5,
            "exploitability": "0.5",
            "weighted_severity": "9.0",
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-2mgw-j7c3-dqbe"
        }
    ],
    "fixing_vulnerabilities": [],
    "risk_score": "4.5",
    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/better-auth@1.4.8-beta.7"
}