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.
CVE-2025-71400
Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-02. A secondary CVSS source baseline 7.1; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.1
- EG Score
- 7.1HIGHmedium confidence
- EG Risk
- 32EG Risk 32/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.4%
- EPSS %ILE
- 26th
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
August 2, 2026
Last Modified
October 8, 2026
Advisory Details (2)
Auto-updated Aug 2, 2026better-auth passkey before 1.4.0 IDOR via delete-passkey | Advisories | VulnCheck
https://www.vulncheck.com/advisories/better-auth-passkey-before-idor-via-delete-passkeyPasskey deletion IDOR · Advisory · better-auth/better-auth · GitHub
https://github.com/better-auth/better-auth/security/advisories/GHSA-4vcf-q4xf-f48mVendor Advisories for CVE-2025-71400(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| @better-auth/passkey | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 18× in last 7d / 88× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 233 total refreshes for this CVE.
- 2026-10-09 20:06 UTCEPSS rescore
- 2026-10-08 17:11 UTCEPSS rescore
- 2026-10-08 16:38 UTCEG score recompute
- 2026-10-08 16:38 UTCGHSA enrichment
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- 2026-10-02 10:26 UTCGHSA enrichment
- 2026-10-01 19:49 UTCEPSS rescore
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- 2026-10-01 13:58 UTCGHSA enrichment
- 2026-10-01 02:40 UTCEG score recompute
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- 2026-09-27 18:20 UTCEG score recompute
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- 2026-09-22 21:31 UTCEG score recompute
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- 2026-09-22 06:50 UTCEG score recompute
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- 2026-09-20 20:58 UTCEG score recompute
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- 2026-09-20 20:15 UTCEPSS rescore
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- 2026-09-18 19:27 UTCEPSS rescore
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- 2026-09-16 05:21 UTCGHSA enrichment
- 2026-09-16 05:14 UTCEPSS rescore
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- 2026-09-15 17:11 UTCGHSA enrichment
- 2026-09-15 03:10 UTCEPSS rescore
- 2026-09-15 02:49 UTCGHSA enrichment
- 2026-09-14 14:11 UTCGHSA enrichment
- 2026-09-14 02:28 UTCEG score recompute
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- 2026-09-13 16:46 UTCEPSS rescore
- 2026-09-13 15:11 UTCGHSA enrichment
- 2026-09-13 03:36 UTCGHSA enrichment
- 2026-09-12 16:19 UTCEG score recompute
- 2026-09-12 16:19 UTCGHSA enrichment
- 2026-09-12 15:00 UTCEPSS rescore
- 2026-09-12 05:03 UTCGHSA enrichment
- 2026-09-11 17:46 UTCEG score recompute
- 2026-09-11 17:46 UTCGHSA enrichment
- 2026-09-11 14:52 UTCEPSS rescore
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- 2026-09-11 06:03 UTCGHSA enrichment
- 2026-09-10 18:46 UTCEG score recompute
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- 2026-09-09 19:43 UTCGHSA enrichment
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- 2026-09-09 08:20 UTCGHSA enrichment
- 2026-09-08 22:00 UTCEPSS rescore
- 2026-09-08 21:03 UTCGHSA enrichment
- 2026-09-07 19:08 UTCEG score recompute
- 2026-09-07 19:08 UTCGHSA enrichment
- 2026-09-07 16:00 UTCEPSS rescore
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2025-71400?
When was CVE-2025-71400 disclosed?
Is CVE-2025-71400 actively exploited?
What is the CVSS score of CVE-2025-71400?
How do I remediate CVE-2025-71400?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-71400
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