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CVE-2025-71400

better-auth passkey before 1.4.0 IDOR via delete-passkey

Published: Aug 2, 2026Updated: Aug 3, 2026 Sources: CVE List NVDCWE-639
7.1HIGH
NVD MITRE
EPSS Score
0.2%
Top 89.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-639

Affected Products

better-auth
oss-projectaka better auth
passkeyLibrary
OSS Libraries / web-framework

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/better-auth/better-auth/security/advisories/GHSA-4vcf-q4xf-f48m
github.com
https://www.vulncheck.com/advisories/better-auth-passkey-before-idor-via-delete-passkey
vulncheck.com

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