{"id":"CVE-2026-110862","revision":"83ec987ff8aa414ab3e1ed04745ac375","records":[{"revision":"83ec987ff8aa414ab3e1ed04745ac375","observedAt":"2026-10-27T16:45:50.731+00:00","statement":{"source":"nvd","id":"CVE-2026-110862","aliases":[],"title":"Better Auth from 1.4.0-beta.18 before 1.7.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to sign in as other users by reusing OAuth state values as Magic Link tokens. Attackers can start an OAuth sig…","description":"Better Auth from 1.4.0-beta.18 before 1.7.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to sign in as other users by reusing OAuth state values as Magic Link tokens. Attackers can start an OAuth sign-in with a victim's email and submit the returned state to Magic Link verification, gaining sessions or creating falsely email-verified accounts.","state":0,"publishedAt":"2026-10-14T23:17:27.673+00:00","modifiedAt":"2026-10-16T18:25:45.343+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","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://www.vulncheck.com/advisories/better-auth-1.4.0-beta.18-before-1.7.7-authentication-bypass-via-magic-link"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110862","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-287"],"productCriteria":[],"sourceDates":{"published":"2026-10-14T23:17:27.673","lastModified":"2026-10-16T18:25:45.343"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-110862","identifiers":["CVE-2026-110862"]},"retained":false,"historicalAffected":[]}],"coverage":[]}