High
CVSS 7.8 JWT Issues Responsible Disclosure
Disclosure
JWT Exploit Results
Critical Discovery: Device tokens pass BOTH web AND admin auth middleware | Auth Method | web/transactions | admin/users | web/configs | admin/teams | |---------------------|-----------------|-------------|-------------|-------------| | No auth | 401 | 401 | 401 | 401 |
- Target
- Nigerian Payment Provider
- Category
- JWT Issues
- 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.