Critical
CVSS 9.1 Credential Exposure Responsible Disclosure
Disclosure
Signup Response Leaks 2FA Secret, Bcrypt Hash and OTP
Registration response returns the full Mongo user document including TOTP secret, bcrypt hash and email OTP.
- Target
- SEA P2P Crypto Exchange
- Category
- Credential Exposure
- Channel
- Responsible Disclosure
- Disclosed
- 2026-04
Redaction note
Vendor identity withheld.
This finding is documented here as part of MemCyber’s public disclosure record. The vendor has been anonymized to a sector and region descriptor. Full technical detail — including root cause, reproducible proof-of-concept, remediation guidance, and vendor attribution where granted — is available to qualified prospects under NDA.
Coordinated disclosure
How we handled it.
- Reported to the vendor via Responsible Disclosure with a reproducible proof-of-concept.
- Triage + remediation window coordinated with the vendor security team.
- Fix verified before any public reference.
- This record published only after the embargo period closed.