CVE-2026-114607

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{"affected": [{"affectedData": [{"product": "better-auth", "vendor": "better-auth", "versions": [{"status": "affected", "version": ">= 1.4.0-beta.18, < 1.7.7"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-114607", "lastModified": "2026-10-23T15:17:26.763", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-114607", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-23T14:55:53.151034Z", "version": "2.0.3"}}]}, "published": "2026-10-22T17:16:58.577", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/better-auth/better-auth/commit/ac54bfd67821a7607533af2059858b12bc54e26a"}, {"source": "security-advisories@github.com", "url": "https://github.com/better-auth/better-auth/pull/11494"}, {"source": "security-advisories@github.com", "url": "https://github.com/better-auth/better-auth/releases/tag/v1.7.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-965c-763c-88jm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"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"]}