CVE-2026-53517

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Source

https://cve.org/CVERecord?id=CVE-2026-53517

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53517.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-53517

Aliases

GHSA-392p-2q2v-4372

Published

2026-07-15T17:33:38.943Z

Modified

2026-07-16T03:48:41.949172275Z

Severity

8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator

Summary

Better Auth OAuth Provider: Refresh Token Rotation Race Condition Allows Concurrent Replay and Token Family Forking

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53517.json",
    "cwe_ids": [
        "CWE-362",
        "CWE-367"
    ],
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/better-auth/better-auth

Affected ranges

Type

GIT

Repo

https://github.com/better-auth/better-auth

Events

Introduced

9d784407ca40224c9072a71ad88550f1b1353bf8

Fixed

0e3f188020fa785d44d0019a3a3c8407a4cc8d5f

Introduced

0e3f188020fa785d44d0019a3a3c8407a4cc8d5f

Fixed

f41514ef07cfafc5dbf463bd1500aee6575d88a7

Database specific

{
    "extracted_events": [
        {
            "introduced": "1.4.8-beta.7"
        },
        {
            "fixed": "1.6.0"
        },
        {
            "introduced": "1.6.0"
        },
        {
            "fixed": "1.6.11"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

@better-auth/api-key@1.*

@better-auth/api-key@1.6.0

@better-auth/api-key@1.6.1

@better-auth/api-key@1.6.10

@better-auth/api-key@1.6.2

@better-auth/api-key@1.6.3

@better-auth/api-key@1.6.4

@better-auth/api-key@1.6.5

@better-auth/api-key@1.6.6

@better-auth/api-key@1.6.7

@better-auth/api-key@1.6.8

@better-auth/api-key@1.6.9

@better-auth/core@1.*

@better-auth/core@1.6.0

@better-auth/core@1.6.1

@better-auth/core@1.6.10

@better-auth/core@1.6.2

@better-auth/core@1.6.3

@better-auth/core@1.6.4

@better-auth/core@1.6.5

@better-auth/core@1.6.6

@better-auth/core@1.6.7

@better-auth/core@1.6.8

@better-auth/core@1.6.9

@better-auth/drizzle-adapter@1.*

@better-auth/drizzle-adapter@1.6.0

@better-auth/drizzle-adapter@1.6.1

@better-auth/drizzle-adapter@1.6.10

@better-auth/drizzle-adapter@1.6.2

@better-auth/drizzle-adapter@1.6.3

@better-auth/drizzle-adapter@1.6.4

@better-auth/drizzle-adapter@1.6.5

@better-auth/drizzle-adapter@1.6.6

@better-auth/drizzle-adapter@1.6.7

@better-auth/drizzle-adapter@1.6.8

@better-auth/drizzle-adapter@1.6.9

@better-auth/electron@1.*

@better-auth/electron@1.6.0

@better-auth/electron@1.6.1

@better-auth/electron@1.6.10

@better-auth/electron@1.6.2

@better-auth/electron@1.6.3

@better-auth/electron@1.6.4

@better-auth/electron@1.6.5

@better-auth/electron@1.6.6

@better-auth/electron@1.6.7

@better-auth/electron@1.6.8

@better-auth/electron@1.6.9

@better-auth/expo@1.*

@better-auth/expo@1.6.0

@better-auth/expo@1.6.1

@better-auth/expo@1.6.10

@better-auth/expo@1.6.2

@better-auth/expo@1.6.3

@better-auth/expo@1.6.4

@better-auth/expo@1.6.5

@better-auth/expo@1.6.6

@better-auth/expo@1.6.7

@better-auth/expo@1.6.8

@better-auth/expo@1.6.9

@better-auth/i18n@1.*

@better-auth/i18n@1.6.0

@better-auth/i18n@1.6.1

@better-auth/i18n@1.6.10

@better-auth/i18n@1.6.2

@better-auth/i18n@1.6.3

@better-auth/i18n@1.6.4

@better-auth/i18n@1.6.5

@better-auth/i18n@1.6.6

@better-auth/i18n@1.6.7

@better-auth/i18n@1.6.8

@better-auth/i18n@1.6.9

@better-auth/kysely-adapter@1.*

@better-auth/kysely-adapter@1.6.0

@better-auth/kysely-adapter@1.6.1

@better-auth/kysely-adapter@1.6.10

@better-auth/kysely-adapter@1.6.2

@better-auth/kysely-adapter@1.6.3

@better-auth/kysely-adapter@1.6.4

@better-auth/kysely-adapter@1.6.5

@better-auth/kysely-adapter@1.6.6

@better-auth/kysely-adapter@1.6.7

@better-auth/kysely-adapter@1.6.8

@better-auth/kysely-adapter@1.6.9

@better-auth/memory-adapter@1.*

@better-auth/memory-adapter@1.6.0

@better-auth/memory-adapter@1.6.1

@better-auth/memory-adapter@1.6.10

@better-auth/memory-adapter@1.6.2

@better-auth/memory-adapter@1.6.3

@better-auth/memory-adapter@1.6.4

@better-auth/memory-adapter@1.6.5

@better-auth/memory-adapter@1.6.6

@better-auth/memory-adapter@1.6.7

@better-auth/memory-adapter@1.6.8

@better-auth/memory-adapter@1.6.9

@better-auth/mongo-adapter@1.*

@better-auth/mongo-adapter@1.6.0

@better-auth/mongo-adapter@1.6.1

@better-auth/mongo-adapter@1.6.10

@better-auth/mongo-adapter@1.6.2

@better-auth/mongo-adapter@1.6.3

@better-auth/mongo-adapter@1.6.4

@better-auth/mongo-adapter@1.6.5

@better-auth/mongo-adapter@1.6.6

@better-auth/mongo-adapter@1.6.7

@better-auth/mongo-adapter@1.6.8

@better-auth/mongo-adapter@1.6.9

@better-auth/oauth-provider@1.*

@better-auth/oauth-provider@1.6.0

@better-auth/oauth-provider@1.6.1

@better-auth/oauth-provider@1.6.10

@better-auth/oauth-provider@1.6.2

@better-auth/oauth-provider@1.6.3

@better-auth/oauth-provider@1.6.4

@better-auth/oauth-provider@1.6.5

@better-auth/oauth-provider@1.6.6

@better-auth/oauth-provider@1.6.7

@better-auth/oauth-provider@1.6.8

@better-auth/oauth-provider@1.6.9

@better-auth/passkey@1.*

@better-auth/passkey@1.6.0

@better-auth/passkey@1.6.1

@better-auth/passkey@1.6.10

@better-auth/passkey@1.6.2

@better-auth/passkey@1.6.3

@better-auth/passkey@1.6.4

@better-auth/passkey@1.6.5

@better-auth/passkey@1.6.6

@better-auth/passkey@1.6.7

@better-auth/passkey@1.6.8

@better-auth/passkey@1.6.9

@better-auth/prisma-adapter@1.*

@better-auth/prisma-adapter@1.6.0

@better-auth/prisma-adapter@1.6.1

@better-auth/prisma-adapter@1.6.10

@better-auth/prisma-adapter@1.6.2

@better-auth/prisma-adapter@1.6.3

@better-auth/prisma-adapter@1.6.4

@better-auth/prisma-adapter@1.6.5

@better-auth/prisma-adapter@1.6.6

@better-auth/prisma-adapter@1.6.7

@better-auth/prisma-adapter@1.6.8

@better-auth/prisma-adapter@1.6.9

@better-auth/redis-storage@1.*

@better-auth/redis-storage@1.6.0

@better-auth/redis-storage@1.6.1

@better-auth/redis-storage@1.6.10

@better-auth/redis-storage@1.6.2

@better-auth/redis-storage@1.6.3

@better-auth/redis-storage@1.6.4

@better-auth/redis-storage@1.6.5

@better-auth/redis-storage@1.6.6

@better-auth/redis-storage@1.6.7

@better-auth/redis-storage@1.6.8

@better-auth/redis-storage@1.6.9

@better-auth/scim@1.*

@better-auth/scim@1.6.0

@better-auth/scim@1.6.1

@better-auth/scim@1.6.10

@better-auth/scim@1.6.2

@better-auth/scim@1.6.3

@better-auth/scim@1.6.4

@better-auth/scim@1.6.5

@better-auth/scim@1.6.6

@better-auth/scim@1.6.7

@better-auth/scim@1.6.8

@better-auth/scim@1.6.9

@better-auth/sso@1.*

@better-auth/sso@1.6.0

@better-auth/sso@1.6.1

@better-auth/sso@1.6.10

@better-auth/sso@1.6.2

@better-auth/sso@1.6.3

@better-auth/sso@1.6.4

@better-auth/sso@1.6.5

@better-auth/sso@1.6.6

@better-auth/sso@1.6.7

@better-auth/sso@1.6.8

@better-auth/sso@1.6.9

@better-auth/stripe@1.*

@better-auth/stripe@1.6.0

@better-auth/stripe@1.6.1

@better-auth/stripe@1.6.10

@better-auth/stripe@1.6.2

@better-auth/stripe@1.6.3

@better-auth/stripe@1.6.4

@better-auth/stripe@1.6.5

@better-auth/stripe@1.6.6

@better-auth/stripe@1.6.7

@better-auth/stripe@1.6.8

@better-auth/stripe@1.6.9

@better-auth/telemetry@1.*

@better-auth/telemetry@1.6.0

@better-auth/telemetry@1.6.1

@better-auth/telemetry@1.6.10

@better-auth/telemetry@1.6.2

@better-auth/telemetry@1.6.3

@better-auth/telemetry@1.6.4

@better-auth/telemetry@1.6.5

@better-auth/telemetry@1.6.6

@better-auth/telemetry@1.6.7

@better-auth/telemetry@1.6.8

@better-auth/telemetry@1.6.9

@better-auth/test-utils@1.*

@better-auth/test-utils@1.6.0

@better-auth/test-utils@1.6.1

@better-auth/test-utils@1.6.10

@better-auth/test-utils@1.6.2

@better-auth/test-utils@1.6.3

@better-auth/test-utils@1.6.4

@better-auth/test-utils@1.6.5

@better-auth/test-utils@1.6.6

@better-auth/test-utils@1.6.7

@better-auth/test-utils@1.6.8

@better-auth/test-utils@1.6.9

auth@1.*

auth@1.6.0

auth@1.6.1

auth@1.6.10

auth@1.6.2

auth@1.6.3

auth@1.6.4

auth@1.6.5

auth@1.6.6

auth@1.6.7

auth@1.6.8

auth@1.6.9

better-auth@1.*

better-auth@1.6.0

better-auth@1.6.1

better-auth@1.6.10

better-auth@1.6.2

better-auth@1.6.3

better-auth@1.6.4

better-auth@1.6.5

better-auth@1.6.6

better-auth@1.6.7

better-auth@1.6.8

better-auth@1.6.9

v1.*

v1.4.8-beta.7

v1.5.0-beta.1

v1.5.0-beta.10

v1.5.0-beta.11

v1.5.0-beta.12

v1.5.0-beta.13

v1.5.0-beta.14

v1.5.0-beta.15

v1.5.0-beta.16

v1.5.0-beta.17

v1.5.0-beta.18

v1.5.0-beta.19

v1.5.0-beta.2

v1.5.0-beta.20

v1.5.0-beta.3

v1.5.0-beta.4

v1.5.0-beta.5

v1.5.0-beta.6

v1.5.0-beta.7

v1.5.0-beta.8

v1.5.0-beta.9

v1.5.1-beta.1

v1.5.1-beta.2

v1.5.1-beta.3

v1.5.1-beta.4

v1.5.7-beta.1

v1.6.0

v1.6.1

v1.6.10

v1.6.2

v1.6.3

v1.6.4

v1.6.5

v1.6.6

v1.6.7

v1.6.8

v1.6.9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53517.json"