Critical
CVSS 9.1 IDOR Private Engagement
Disclosure
CryptoWallets IDOR Exposes 100K+ Wallet Addresses
Wallet resource enumerable by incrementing numeric ID leaks 100K+ user wallet addresses and balances.
- Target
- European iGaming Platform
- Category
- IDOR
- Channel
- Private Engagement
- 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 Private Engagement 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.