{"id":"CVE-2026-114607","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-114607","generatedAt":"2026-10-27T22:46:20.024Z","title":"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…","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.","published":"2026-10-22T17:16:59.000Z","lastModified":"2026-10-23T15:17:27.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-287"],"affected":[],"epss":{"score":0.0042,"percentile":0.36015,"date":"2026-10-26","history":[{"date":"2026-10-23","score":0.00347,"percentile":0.27075}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-22T17:16:59.000Z","detail":{"score":"9.1","severity":"CRITICAL","publishedAt":"2026-10-22T17:16:58.577Z"},"summary":"New CVE, critical severity (CVSS 9.1)."}],"references":[{"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","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-114607","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}