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MemCyber
Critical CVSS 9.1 API Key Exposure Responsible Disclosure

Disclosure

Production API Authentication Bypass via Encryption Key Exposure

Finding 2: Production API Authentication Bypass via Encryption Key Exposure The API gateway validation uses an AES-256-CBC encrypted `X-Request-ID` header. The encryption key, IV, API key, and subscription key are all exposed in client-side JavaScript, allowing anyone to forge va

Target
African Remittance Provider
Category
API Key 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.

Similar category

Want the full technical detail?

Named vendor, PoC, remediation — shared under NDA.