{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-71402", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-07-18T12:38:41.077Z", "datePublished": "2026-08-01T12:22:16.655Z", "dateUpdated": "2026-08-03T19:32:01.754Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-01T12:22:16.655Z"}, "datePublic": "2025-11-26T00:00:00.000Z", "title": "better-auth before 1.4.0 Session Revocation via Forged Cookie", "descriptions": [{"lang": "en", "value": "better-auth versions greater than 1.3.34 and before 1.4.0 contain a vulnerability in the multi-session plugin's /sign-out after-hook, which trusts raw multi-session cookies and forwards extracted values to internalAdapter.deleteSessions without verifying the cookie signature (e.g., via getSignedCookie). An attacker can supply a forged _multi-* cookie to trigger deletion of arbitrary session tokens."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Verification of Cryptographic Signature", "cweId": "CWE-347", "type": "CWE"}]}], "affected": [{"vendor": "better-auth", "product": "better-auth", "defaultStatus": "unaffected", "packageURL": "pkg:npm/better-auth", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "1.4.0"}, {"version": "1.4.0", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:better-auth:better-auth\\/oauth-provider:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "1.4.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "HIGH", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "baseScore": 2, "baseSeverity": "LOW"}}], "references": [{"url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-wmjr-v86c-m9jj", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-wmjr-v86c-m9jj)"}, {"name": "VulnCheck Advisory: better-auth before 1.4.0 Session Revocation via Forged Cookie", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/better-auth-before-session-revocation-via-forged-cookie"}], "credits": [{"lang": "en", "value": "mufeedvh", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-03T19:31:34.482271Z", "id": "CVE-2025-71402", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-03T19:32:01.754Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-71402", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-03T19:31:34.482271Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-03T19:31:57.219Z"}}], "cna": {"title": "better-auth before 1.4.0 Session Revocation via Forged Cookie", "credits": [{"lang": "en", "type": "finder", "value": "mufeedvh"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "baseScore": 2, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "HIGH", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "LOW"}}], "affected": [{"vendor": "better-auth", "product": "better-auth", "versions": [{"status": "affected", "version": "0", "lessThan": "1.4.0", "versionType": "semver"}, {"status": "unaffected", "version": "1.4.0", "versionType": "semver"}], "packageURL": "pkg:npm/better-auth", "defaultStatus": "unaffected"}], "datePublic": "2025-11-26T00:00:00.000Z", "references": [{"url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-wmjr-v86c-m9jj", "name": "GitHub Security Advisory (GHSA-wmjr-v86c-m9jj)", "tags": ["vendor-advisory"]}, {"url": "https://www.vulncheck.com/advisories/better-auth-before-session-revocation-via-forged-cookie", "name": "VulnCheck Advisory: better-auth before 1.4.0 Session Revocation via Forged Cookie", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "vulncheck-endgame"}, "descriptions": [{"lang": "en", "value": "better-auth versions greater than 1.3.34 and before 1.4.0 contain a vulnerability in the multi-session plugin's /sign-out after-hook, which trusts raw multi-session cookies and forwards extracted values to internalAdapter.deleteSessions without verifying the cookie signature (e.g., via getSignedCookie). An attacker can supply a forged _multi-* cookie to trigger deletion of arbitrary session tokens."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-347", "description": "Improper Verification of Cryptographic Signature"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:better-auth:better-auth\\/oauth-provider:*:*:*:*:*:node.js:*:*", "vulnerable": true, "versionEndExcluding": "1.4.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-01T12:22:16.655Z"}}}, "cveMetadata": {"cveId": "CVE-2025-71402", "state": "PUBLISHED", "dateUpdated": "2026-08-03T19:32:01.754Z", "dateReserved": "2026-07-18T12:38:41.077Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-08-01T12:22:16.655Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:npm/better-auth", "product": "better-auth", "vendor": "better-auth", "versions": [{"lessThan": "1.4.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "1.4.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "better-auth versions greater than 1.3.34 and before 1.4.0 contain a vulnerability in the multi-session plugin's /sign-out after-hook, which trusts raw multi-session cookies and forwards extracted values to internalAdapter.deleteSessions without verifying the cookie signature (e.g., via getSignedCookie). An attacker can supply a forged _multi-* cookie to trigger deletion of arbitrary session tokens."}, {"lang": "es", "value": "Las versiones de better-auth superiores a 1.3.34 y anteriores a 1.4.0 contienen una vulnerabilidad en el after-hook /sign-out del plugin de multi-sesi\u00f3n, que conf\u00eda en las cookies de multi-sesi\u00f3n sin procesar y reenv\u00eda los valores extra\u00eddos a internalAdapter.deleteSessions sin verificar la firma de la cookie (p. ej., a trav\u00e9s de getSignedCookie). Un atacante puede proporcionar una cookie _multi-* falsificada para activar la eliminaci\u00f3n de tokens de sesi\u00f3n arbitrarios."}], "id": "CVE-2025-71402", "lastModified": "2026-10-06T22:10:00.247", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.0, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-71402", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-03T19:31:34.482271Z", "version": "2.0.3"}}]}, "published": "2026-08-01T13:16:55.510", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-wmjr-v86c-m9jj"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/better-auth-before-session-revocation-via-forged-cookie"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["node.js"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 99.0, "source": "matching"}]}, "original": {"product": "better-auth", "source": "cna", "vendor": "better-auth"}, "product": "better-auth\\/oauth-provider", "vendor": "better-auth"}], "created": "2026-08-01T14:15:03.468032+00:00", "updated": "2026-08-02T03:30:14.835196+00:00", "vendors": ["better-auth", "better-auth$PRODUCT$better-auth\\/oauth-provider"]}