Description
better-auth passkey versions before 1.4.0 contain an insecure direct object reference vulnerability in the passkey deletion endpoint that allows authenticated users to delete arbitrary passkeys by ID. Attackers with valid sessions can submit crafted requests to the delete-passkey endpoint with enumerated passkey IDs to remove other users' passkeys.
Published: 2026-08-02
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 03 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 02 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Better-auth better-auth/oauth-provider
Better-auth passkey
Vendors & Products Better-auth better-auth/oauth-provider
Better-auth passkey

Sun, 02 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
Description better-auth passkey versions before 1.4.0 contain an insecure direct object reference vulnerability in the passkey deletion endpoint that allows authenticated users to delete arbitrary passkeys by ID. Attackers with valid sessions can submit crafted requests to the delete-passkey endpoint with enumerated passkey IDs to remove other users' passkeys.
Title better-auth passkey before 1.4.0 IDOR via delete-passkey
First Time appeared Better-auth
Better-auth better-auth\/oauth-provider
Weaknesses CWE-639
CPEs cpe:2.3:a:better-auth:better-auth\/oauth-provider:*:*:*:*:*:node.js:*:*
Vendors & Products Better-auth
Better-auth better-auth\/oauth-provider
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N'}


Subscriptions

Better-auth Better-auth/oauth-provider Better-auth\/oauth-provider Passkey
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-03T15:37:32.735Z

Reserved: 2026-07-18T12:38:41.077Z

Link: CVE-2025-71400

cve-icon Vulnrichment

Updated: 2026-08-03T14:46:46.717Z

cve-icon NVD

Status : Received

Published: 2026-08-02T13:16:52.387

Modified: 2026-08-03T17:16:28.987

Link: CVE-2025-71400

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-03T09:30:17Z

Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key