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.
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