Critical
CVSS 9.3 JWT Issues Responsible Disclosure
Disclosure
5x [redacted] Database Instances FULLY ACCESSIBLE [CRITICAL - MEGA]
Finding 0: 5x [redacted] Database Instances FULLY ACCESSIBLE [CRITICAL - MEGA] - Severity: CRITICAL (CVSS 9.8) - Impact: 5 separate [redacted] PostgreSQL databases for internal operations dashboards are publicly accessible with anon JWT keys hardcoded in publicly-hosted JS files. Com
- Target
- Crypto Fintech Mass Scan
- Category
- JWT Issues
- Channel
- Responsible Disclosure
- Disclosed
- 2026-03
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.