{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-114607", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-21T20:34:25.599Z", "datePublished": "2026-10-22T16:47:27.480Z", "dateUpdated": "2026-10-23T15:02:40.820Z"}, "containers": {"cna": {"title": "better-auth: OAuth state can be used as a Magic Link to sign in as another user", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "lang": "en", "description": "CWE-287: Improper Authentication", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-965c-763c-88jm", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-965c-763c-88jm"}, {"name": "https://github.com/better-auth/better-auth/pull/11494", "tags": ["x_refsource_MISC"], "url": "https://github.com/better-auth/better-auth/pull/11494"}, {"name": "https://github.com/better-auth/better-auth/commit/ac54bfd67821a7607533af2059858b12bc54e26a", "tags": ["x_refsource_MISC"], "url": "https://github.com/better-auth/better-auth/commit/ac54bfd67821a7607533af2059858b12bc54e26a"}, {"name": "https://github.com/better-auth/better-auth/releases/tag/v1.7.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/better-auth/better-auth/releases/tag/v1.7.7"}], "affected": [{"vendor": "better-auth", "product": "better-auth", "versions": [{"version": ">= 1.4.0-beta.18, < 1.7.7", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-22T16:47:27.480Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-965c-763c-88jm", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-23T14:55:53.151034Z", "id": "CVE-2026-114607", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-23T15:02:40.820Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.4.0-beta.18,1.7.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "better-auth", "source": "cna", "vendor": "better-auth"}, "product": "better_auth", "vendor": "better-auth"}], "created": "2026-10-22T19:00:16.045094+00:00", "updated": "2026-10-22T19:15:10.630150+00:00", "vendors": ["better-auth", "better-auth$PRODUCT$better_auth"]}