🛡️ CVE-2025-71400 — passkey

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-284 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability low.

Weakness class

CVE-2025-71400 is classified as CWE-284: Improper Access Control. The software does not restrict an action to the actors that should be allowed to perform it.

Affected software

CVE-2025-71400 is recorded against 2 packages.

  • @better-auth/passkey
  • unknown

Timeline and source

Published on 25 November 2025 and last revised on 3 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
github.com (Web)
github.com (Package)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
CWE CWE-284
Public Exploit ✅ No
Source NVD
Published 2025-11-25
Updated 2026-08-12
Modified 2026-08-03
Fix URL N/A

Affected Packages

Software From version Fixed in
@better-auth/passkey — —
unknown — —

Similar Threats

Site Security Check

Is passkey part of your stack?

CVE-2025-71400 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.