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MemCyber
Critical CVSS 9.8 API Key Exposure Responsible Disclosure

Disclosure

Critical Oss Sts Finding

CRITICAL: Unauthenticated STS Token Generation → Full OSS Bucket Read/Write Access Target: [redacted].store (Nigerian gift card P2P trading platform, ~1.3M users) Status: Authorized Penetration Test Unauthenticated Alibaba Cloud STS Token Generation via getOssToken API Leads to Full Re

Target
SEA Crypto Exchange
Category
API Key Exposure
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.

Similar category

Want the full technical detail?

Named vendor, PoC, remediation — shared under NDA.