Search

Find a vulnerability

Search criteria ⓘ Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
Enable “Apply ordering” to sort by date instead of relevance.

    6 vulnerabilities by @better-auth

    CVE-2026-53517 (GCVE-0-2026-53517)

    Vulnerability from nvd – Published: 2026-07-15 17:33 – Updated: 2026-07-15 17:33
    VLAI
    Title
    Better Auth OAuth Provider: Refresh Token Rotation Race Condition Allows Concurrent Replay and Token Family Forking
    Summary
    Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint on the refresh_token grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh token to pass the revoked check and create forked refresh-token families; the vulnerable range also includes embedded better-auth plugin versions before 1.6.0. This issue is fixed in version 1.6.11.
    Severity
    8.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
    Assigner
    References
    Impacted products
    Vendor Product Version
    better-auth better-auth Affected: >= 1.4.8-beta.7, < 1.6.0
    		Create a notification for this product.
    @better-auth oauth-provider Affected: >= 1.6.0, < 1.6.11
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "better-auth",
          "vendor": "better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.4.8-beta.7, \u003c 1.6.0"
            }
          ]
        },
        {
          "product": "oauth-provider",
          "vendor": "@better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.6.0, \u003c 1.6.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint on the refresh_token grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh token to pass the revoked check and create forked refresh-token families; the vulnerable range also includes embedded better-auth plugin versions before 1.6.0. This issue is fixed in version 1.6.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-367",
              "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T17:33:38.943Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-392p-2q2v-4372",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-392p-2q2v-4372"
        },
        {
          "name": "https://github.com/better-auth/better-auth/commit/c6918ecc9e3a75892169415d7f6c95b591b6a52d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/commit/c6918ecc9e3a75892169415d7f6c95b591b6a52d"
        },
        {
          "name": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11"
        }
      ],
      "source": {
        "advisory": "GHSA-392p-2q2v-4372",
        "discovery": "UNKNOWN"
      },
      "title": "Better Auth OAuth Provider: Refresh Token Rotation Race Condition Allows Concurrent Replay and Token Family Forking"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53517",
    "datePublished": "2026-07-15T17:33:38.943Z",
    "dateReserved": "2026-06-09T17:30:33.456Z",
    "dateUpdated": "2026-07-15T17:33:38.943Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-53515 (GCVE-0-2026-53515)

    Vulnerability from nvd – Published: 2026-07-15 17:27 – Updated: 2026-07-15 17:27
    VLAI
    Title
    Better Auth: Privilege escalation via SSO provider registration: missing admin role check in @better-auth/sso
    Summary
    Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin's POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row and does not require an owner or admin role, allowing attacker-controlled OIDC or SAML providers to drive /sso/callback/{providerId} organization provisioning. This issue is fixed in version 1.6.11.
    Severity
    7.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
    CWE
    • CWE-269 - Improper Privilege Management
    • CWE-285 - Improper Authorization
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Vendor Product Version
    better-auth better-auth Affected: >= 1.2.10, < 1.6.11
    		Create a notification for this product.
    @better-auth sso Affected: >= 1.2.10, < 1.6.11
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "better-auth",
          "vendor": "better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.2.10, \u003c 1.6.11"
            }
          ]
        },
        {
          "product": "sso",
          "vendor": "@better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.2.10, \u003c 1.6.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin\u0027s POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row and does not require an owner or admin role, allowing attacker-controlled OIDC or SAML providers to drive /sso/callback/{providerId} organization provisioning. This issue is fixed in version 1.6.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T17:27:00.291Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-gv74-j8m3-fg5f",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-gv74-j8m3-fg5f"
        },
        {
          "name": "https://github.com/better-auth/better-auth/pull/9220",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/pull/9220"
        },
        {
          "name": "https://github.com/better-auth/better-auth/commit/86765f1597378f5c3deed1b80ca91faac0a6bf00",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/commit/86765f1597378f5c3deed1b80ca91faac0a6bf00"
        },
        {
          "name": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11"
        }
      ],
      "source": {
        "advisory": "GHSA-gv74-j8m3-fg5f",
        "discovery": "UNKNOWN"
      },
      "title": "Better Auth: Privilege escalation via SSO provider registration: missing admin role check in @better-auth/sso"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53515",
    "datePublished": "2026-07-15T17:27:00.291Z",
    "dateReserved": "2026-06-09T17:30:33.456Z",
    "dateUpdated": "2026-07-15T17:27:00.291Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-53513 (GCVE-0-2026-53513)

    Vulnerability from nvd – Published: 2026-07-15 17:15 – Updated: 2026-07-15 17:15
    VLAI
    Title
    Better Auth: Server-side request forgery via unvalidated OIDC endpoints on @better-auth/sso provider registration
    Summary
    Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin's POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: true is set, store them on the ssoProvider row without origin validation, and fetch them during OIDC callback, allowing non-blind server-side request forgery and possible account linking when trustEmailVerified: true is configured. This issue is fixed in version 1.6.11.
    Severity
    9.6 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
    CWE
    • CWE-20 - Improper Input Validation
    • CWE-345 - Insufficient Verification of Data Authenticity
    • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    better-auth better-auth Affected: >= 0.1.0, < 1.6.11
    		Create a notification for this product.
    @better-auth sso Affected: >= 0.1.0, < 1.6.11
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "better-auth",
          "vendor": "better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.1.0, \u003c 1.6.11"
            }
          ]
        },
        {
          "product": "sso",
          "vendor": "@better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.1.0, \u003c 1.6.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin\u0027s POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: true is set, store them on the ssoProvider row without origin validation, and fetch them during OIDC callback, allowing non-blind server-side request forgery and possible account linking when trustEmailVerified: true is configured. This issue is fixed in version 1.6.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345: Insufficient Verification of Data Authenticity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-441",
              "description": "CWE-441: Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T17:15:59.611Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-5rr4-8452-hf4v",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-5rr4-8452-hf4v"
        },
        {
          "name": "https://github.com/better-auth/better-auth/pull/9574",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/pull/9574"
        },
        {
          "name": "https://github.com/better-auth/better-auth/commit/37f60cb176cb53147da7dfd5ec15afa5b486e81e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/commit/37f60cb176cb53147da7dfd5ec15afa5b486e81e"
        },
        {
          "name": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11"
        }
      ],
      "source": {
        "advisory": "GHSA-5rr4-8452-hf4v",
        "discovery": "UNKNOWN"
      },
      "title": "Better Auth: Server-side request forgery via unvalidated OIDC endpoints on @better-auth/sso provider registration"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53513",
    "datePublished": "2026-07-15T17:15:59.611Z",
    "dateReserved": "2026-06-09T17:30:33.455Z",
    "dateUpdated": "2026-07-15T17:15:59.611Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-53517 (GCVE-0-2026-53517)

    Vulnerability from cvelistv5 – Published: 2026-07-15 17:33 – Updated: 2026-07-15 17:33
    VLAI
    Title
    Better Auth OAuth Provider: Refresh Token Rotation Race Condition Allows Concurrent Replay and Token Family Forking
    Summary
    Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint on the refresh_token grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh token to pass the revoked check and create forked refresh-token families; the vulnerable range also includes embedded better-auth plugin versions before 1.6.0. This issue is fixed in version 1.6.11.
    Severity
    8.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
    Assigner
    References
    Impacted products
    Vendor Product Version
    better-auth better-auth Affected: >= 1.4.8-beta.7, < 1.6.0
    		Create a notification for this product.
    @better-auth oauth-provider Affected: >= 1.6.0, < 1.6.11
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "better-auth",
          "vendor": "better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.4.8-beta.7, \u003c 1.6.0"
            }
          ]
        },
        {
          "product": "oauth-provider",
          "vendor": "@better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.6.0, \u003c 1.6.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint on the refresh_token grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh token to pass the revoked check and create forked refresh-token families; the vulnerable range also includes embedded better-auth plugin versions before 1.6.0. This issue is fixed in version 1.6.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-367",
              "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T17:33:38.943Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-392p-2q2v-4372",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-392p-2q2v-4372"
        },
        {
          "name": "https://github.com/better-auth/better-auth/commit/c6918ecc9e3a75892169415d7f6c95b591b6a52d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/commit/c6918ecc9e3a75892169415d7f6c95b591b6a52d"
        },
        {
          "name": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11"
        }
      ],
      "source": {
        "advisory": "GHSA-392p-2q2v-4372",
        "discovery": "UNKNOWN"
      },
      "title": "Better Auth OAuth Provider: Refresh Token Rotation Race Condition Allows Concurrent Replay and Token Family Forking"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53517",
    "datePublished": "2026-07-15T17:33:38.943Z",
    "dateReserved": "2026-06-09T17:30:33.456Z",
    "dateUpdated": "2026-07-15T17:33:38.943Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-53515 (GCVE-0-2026-53515)

    Vulnerability from cvelistv5 – Published: 2026-07-15 17:27 – Updated: 2026-07-15 17:27
    VLAI
    Title
    Better Auth: Privilege escalation via SSO provider registration: missing admin role check in @better-auth/sso
    Summary
    Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin's POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row and does not require an owner or admin role, allowing attacker-controlled OIDC or SAML providers to drive /sso/callback/{providerId} organization provisioning. This issue is fixed in version 1.6.11.
    Severity
    7.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
    CWE
    • CWE-269 - Improper Privilege Management
    • CWE-285 - Improper Authorization
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Vendor Product Version
    better-auth better-auth Affected: >= 1.2.10, < 1.6.11
    		Create a notification for this product.
    @better-auth sso Affected: >= 1.2.10, < 1.6.11
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "better-auth",
          "vendor": "better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.2.10, \u003c 1.6.11"
            }
          ]
        },
        {
          "product": "sso",
          "vendor": "@better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.2.10, \u003c 1.6.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin\u0027s POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row and does not require an owner or admin role, allowing attacker-controlled OIDC or SAML providers to drive /sso/callback/{providerId} organization provisioning. This issue is fixed in version 1.6.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T17:27:00.291Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-gv74-j8m3-fg5f",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-gv74-j8m3-fg5f"
        },
        {
          "name": "https://github.com/better-auth/better-auth/pull/9220",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/pull/9220"
        },
        {
          "name": "https://github.com/better-auth/better-auth/commit/86765f1597378f5c3deed1b80ca91faac0a6bf00",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/commit/86765f1597378f5c3deed1b80ca91faac0a6bf00"
        },
        {
          "name": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11"
        }
      ],
      "source": {
        "advisory": "GHSA-gv74-j8m3-fg5f",
        "discovery": "UNKNOWN"
      },
      "title": "Better Auth: Privilege escalation via SSO provider registration: missing admin role check in @better-auth/sso"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53515",
    "datePublished": "2026-07-15T17:27:00.291Z",
    "dateReserved": "2026-06-09T17:30:33.456Z",
    "dateUpdated": "2026-07-15T17:27:00.291Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-53513 (GCVE-0-2026-53513)

    Vulnerability from cvelistv5 – Published: 2026-07-15 17:15 – Updated: 2026-07-15 17:15
    VLAI
    Title
    Better Auth: Server-side request forgery via unvalidated OIDC endpoints on @better-auth/sso provider registration
    Summary
    Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin's POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: true is set, store them on the ssoProvider row without origin validation, and fetch them during OIDC callback, allowing non-blind server-side request forgery and possible account linking when trustEmailVerified: true is configured. This issue is fixed in version 1.6.11.
    Severity
    9.6 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
    CWE
    • CWE-20 - Improper Input Validation
    • CWE-345 - Insufficient Verification of Data Authenticity
    • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    better-auth better-auth Affected: >= 0.1.0, < 1.6.11
    		Create a notification for this product.
    @better-auth sso Affected: >= 0.1.0, < 1.6.11
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "better-auth",
          "vendor": "better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.1.0, \u003c 1.6.11"
            }
          ]
        },
        {
          "product": "sso",
          "vendor": "@better-auth",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.1.0, \u003c 1.6.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin\u0027s POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: true is set, store them on the ssoProvider row without origin validation, and fetch them during OIDC callback, allowing non-blind server-side request forgery and possible account linking when trustEmailVerified: true is configured. This issue is fixed in version 1.6.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345: Insufficient Verification of Data Authenticity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-441",
              "description": "CWE-441: Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T17:15:59.611Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/better-auth/better-auth/security/advisories/GHSA-5rr4-8452-hf4v",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-5rr4-8452-hf4v"
        },
        {
          "name": "https://github.com/better-auth/better-auth/pull/9574",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/pull/9574"
        },
        {
          "name": "https://github.com/better-auth/better-auth/commit/37f60cb176cb53147da7dfd5ec15afa5b486e81e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/commit/37f60cb176cb53147da7dfd5ec15afa5b486e81e"
        },
        {
          "name": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/better-auth/better-auth/releases/tag/v1.6.11"
        }
      ],
      "source": {
        "advisory": "GHSA-5rr4-8452-hf4v",
        "discovery": "UNKNOWN"
      },
      "title": "Better Auth: Server-side request forgery via unvalidated OIDC endpoints on @better-auth/sso provider registration"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53513",
    "datePublished": "2026-07-15T17:15:59.611Z",
    "dateReserved": "2026-06-09T17:30:33.455Z",
    "dateUpdated": "2026-07-15T17:15:59.611Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}