{"id":"CVE-2026-114607","revision":"b92114d27c1b4ccc976ed75d769888ce","records":[{"revision":"b92114d27c1b4ccc976ed75d769888ce","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-114607","aliases":[],"title":"better-auth: OAuth state can be used as a Magic Link to sign in as another user","description":"Better Auth is an authentication and authorization library for TypeScript. From 1.4.0-beta.18 until 1.7.7, deployments that enable Magic Link with storeToken set to plain, or with storeToken set to hashed and the global verification.storeIdentifier setting also set to hashed, enable a built-in social or Generic OAuth provider, and use account.storeStateStrategy set to database can accept an OAuth sign-in state value as a Magic Link token. These settings can cause Magic Link verification records and OAuth state to resolve to the same stored identifier, allowing an unauthenticated attacker to start OAuth sign-in for a known email address and redeem the returned state through Magic Link without controlling the mailbox or completing the provider callback. The attacker can obtain a normal session for an existing user, or create an account incorrectly marked as email verified when sign-up is enabled. This issue is fixed in version 1.7.7.","state":0,"publishedAt":"2026-10-22T16:47:27.48+00:00","modifiedAt":"2026-10-22T16:47:27.48+00:00","affected":[{"ecosystem":"Vendor product","name":"better-auth","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"better-auth\",\n                    \"product\": \"better-auth\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.4.0-beta.18, < 1.7.7\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":"CRITICAL"}],"references":["https://github.com/better-auth/better-auth/security/advisories/GHSA-965c-763c-88jm","https://github.com/better-auth/better-auth/pull/11494","https://github.com/better-auth/better-auth/commit/ac54bfd67821a7607533af2059858b12bc54e26a","https://github.com/better-auth/better-auth/releases/tag/v1.7.7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114607","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-114607","identifiers":["CVE-2026-114607"]},"retained":false,"historicalAffected":[]}],"coverage":[]}