CVE-2025-71400
better-auth passkey before 1.4.0 IDOR via delete-passkey
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
better-auth passkey before 1.4.0 IDOR via delete-passkey
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.
- Record
CVE-2025-71400- CVSS 4.0
- 7.1 High
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 - CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-639
- Updated
- 2026-11-02
EUVDEUVD-2025-210591
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.
- Record
EUVD-2025-210591- CVSS 4.0
- 7.1 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-44ff-3cmc-mgqf
better-auth passkey versions before 1.4.0 contain an insecure direct object reference...
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.
- Record
GHSA-44ff-3cmc-mgqf- CVSS 4.0
- 7.1 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-639
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-4vcf-q4xf-f48m
Better Auth Passkey Plugin allows passkey deletion through IDOR
Summary
Affected versions of the better-auth passkey plugin allow users with any valid session to delete arbitrary passkeys via their ID using POST /passkey/delete-passkey.
Details
ctx.body.id is implicitly trusted and used in passkey deletion queries.
better-auth applications configured with useNumberId may use auto incrementing IDs which makes it trivial to delete all passkeys via enumeration.
- Record
GHSA-4vcf-q4xf-f48m- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-284, CWE-639
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-71400- CVSS 4.0
- 7.1 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-639
- Updated
- 2026-11-02
OSV
better-auth passkey before 1.4.0 IDOR via delete-passkey
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.
- Record
CVE-2025-71400- CVSS 4.0
- 7.1 High
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 - Weakness
- CWE-639
- Updated
- 2026-11-02
OSVGHSA-4vcf-q4xf-f48m
Better Auth Passkey Plugin allows passkey deletion through IDOR
Summary
Affected versions of the better-auth passkey plugin allow users with any valid session to delete arbitrary passkeys via their ID using POST /passkey/delete-passkey.
Details
ctx.body.id is implicitly trusted and used in passkey deletion queries.
better-auth applications configured with useNumberId may use auto incrementing IDs which makes it trivial to delete all passkeys via enumeration.
- Record
GHSA-4vcf-q4xf-f48m- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-284, CWE-639
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@better-auth/passkeynpm |
before 1.4.0 | 1.4.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-71400 is a high vulnerability (CVSS 7.1) in Better-auth Passkey, published November 25, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 29th percentile. Fixed in @better-auth/passkey 1.4.0.
References
github.com/better-auth/better-auth/security/advisories/GHSA-4vcf-q4xf-f48m
vulncheck.com/advisories/better-auth-passkey-before-idor-via-delete-passkey
nvd.nist.gov/vuln/detail/CVE-2025-71400