{"id":"CVE-2026-114607","summary":"better-auth: OAuth state can be used as a Magic Link to sign in as another user","details":"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.","aliases":["CVE-2026-110862","GHSA-965c-763c-88jm"],"modified":"2026-10-23T02:55:47.448956204Z","published":"2026-10-22T16:47:27.480Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-287"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114607.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114607.json"},{"type":"FIX","url":"https://github.com/better-auth/better-auth/commit/ac54bfd67821a7607533af2059858b12bc54e26a"},{"type":"FIX","url":"https://github.com/better-auth/better-auth/pull/11494"},{"type":"WEB","url":"https://github.com/better-auth/better-auth/releases/tag/v1.7.7"},{"type":"ADVISORY","url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-965c-763c-88jm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114607"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/better-auth/better-auth","events":[{"introduced":"04c0c10472ae2f287da0c352e719fa22ca49e674"},{"fixed":"db02f233918ad1233bf0753e437e1c0da353273d"},{"fixed":"ac54bfd67821a7607533af2059858b12bc54e26a"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"1.4.0-beta.18"},{"fixed":"1.7.7"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"},{"range":[{"fixed":"ac54bfd67821a7607533af2059858b12bc54e26a"}],"source":"REFERENCES_COMMIT"},{"range":[{"fixed":"db02f233918ad1233bf0753e437e1c0da353273d"}],"source":"REFERENCES_TAG","original_tag":"v1.7.7"}]}}],"versions":["v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.6.30","v1.7.1","v1.7.0","v1.6.29","v1.6.28","v1.6.27","v1.6.26","v1.6.25","v1.6.24","v1.6.23","v1.6.22","v1.6.21","v1.6.20","v1.6.19","v1.6.18","v1.6.17","v1.6.16","better-auth@1.6.16","auth@1.6.16","@better-auth/test-utils@1.6.16","@better-auth/telemetry@1.6.16","@better-auth/stripe@1.6.16","@better-auth/sso@1.6.16","@better-auth/scim@1.6.16","@better-auth/redis-storage@1.6.16","@better-auth/prisma-adapter@1.6.16","@better-auth/passkey@1.6.16","@better-auth/oauth-provider@1.6.16","@better-auth/mongo-adapter@1.6.16","@better-auth/memory-adapter@1.6.16","@better-auth/kysely-adapter@1.6.16","@better-auth/i18n@1.6.16","@better-auth/expo@1.6.16","@better-auth/electron@1.6.16","@better-auth/drizzle-adapter@1.6.16","@better-auth/core@1.6.16","@better-auth/api-key@1.6.16","v1.6.15","better-auth@1.6.15","auth@1.6.15","@better-auth/test-utils@1.6.15","@better-auth/telemetry@1.6.15","@better-auth/stripe@1.6.15","@better-auth/sso@1.6.15","@better-auth/scim@1.6.15","@better-auth/redis-storage@1.6.15","@better-auth/prisma-adapter@1.6.15","@better-auth/passkey@1.6.15","@better-auth/oauth-provider@1.6.15","@better-auth/mongo-adapter@1.6.15","@better-auth/memory-adapter@1.6.15","@better-auth/kysely-adapter@1.6.15","@better-auth/i18n@1.6.15","@better-auth/expo@1.6.15","@better-auth/electron@1.6.15","@better-auth/drizzle-adapter@1.6.15","@better-auth/core@1.6.15","@better-auth/api-key@1.6.15","v1.6.14","better-auth@1.6.14","auth@1.6.14","@better-auth/test-utils@1.6.14","@better-auth/telemetry@1.6.14","@better-auth/stripe@1.6.14","@better-auth/sso@1.6.14","@better-auth/scim@1.6.14","@better-auth/redis-storage@1.6.14","@better-auth/prisma-adapter@1.6.14","@better-auth/passkey@1.6.14","@better-auth/oauth-provider@1.6.14","@better-auth/mongo-adapter@1.6.14","@better-auth/memory-adapter@1.6.14","@better-auth/kysely-adapter@1.6.14","@better-auth/i18n@1.6.14","@better-auth/expo@1.6.14","@better-auth/electron@1.6.14","@better-auth/drizzle-adapter@1.6.14","@better-auth/core@1.6.14","@better-auth/api-key@1.6.14","v1.6.13","better-auth@1.6.13","auth@1.6.13","@better-auth/test-utils@1.6.13","@better-auth/telemetry@1.6.13","@better-auth/stripe@1.6.13","@better-auth/sso@1.6.13","@better-auth/scim@1.6.13","@better-auth/redis-storage@1.6.13","@better-auth/prisma-adapter@1.6.13","@better-auth/passkey@1.6.13","@better-auth/oauth-provider@1.6.13","@better-auth/mongo-adapter@1.6.13","@better-auth/memory-adapter@1.6.13","@better-auth/kysely-adapter@1.6.13","@better-auth/i18n@1.6.13","@better-auth/expo@1.6.13","@better-auth/electron@1.6.13","@better-auth/drizzle-adapter@1.6.13","@better-auth/core@1.6.13","@better-auth/api-key@1.6.13","v1.6.12","better-auth@1.6.12","auth@1.6.12","@better-auth/test-utils@1.6.12","@better-auth/telemetry@1.6.12","@better-auth/stripe@1.6.12","@better-auth/sso@1.6.12","@better-auth/scim@1.6.12","@better-auth/redis-storage@1.6.12","@better-auth/prisma-adapter@1.6.12","@better-auth/passkey@1.6.12","@better-auth/oauth-provider@1.6.12","@better-auth/mongo-adapter@1.6.12","@better-auth/memory-adapter@1.6.12","@better-auth/kysely-adapter@1.6.12","@better-auth/i18n@1.6.12","@better-auth/expo@1.6.12","@better-auth/electron@1.6.12","@better-auth/drizzle-adapter@1.6.12","@better-auth/core@1.6.12","@better-auth/api-key@1.6.12","v1.6.11","better-auth@1.6.11","auth@1.6.11","@better-auth/test-utils@1.6.11","@better-auth/telemetry@1.6.11","@bet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