mpp-server-middleware
Warn
Audited by Snyk on Jun 29, 2026
Risk Level: MEDIUM
Full Analysis
MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).
- Third-party content exposure detected (high risk: 0.95). The REQUIRED workflow explicitly fetches live public web content at runtime (e.g.,
https://www.npmjs.com/package/mppx,https://docs.stripe.com/..., and web-search results), and those fetched pages’ readable text would be ingested into the agent’s LLM context for summarization/implementation guidance.
MEDIUM W009: Direct money access capability detected (payment gateways, crypto, banking).
- Direct money access detected (high risk: 1.00). The skill is explicitly a payment middleware: it defines mppx.create(...) with a secretKey and a methods array that includes provider-specific configs (examples show stripe.charge and tempo.charge). It exposes mppx.charge({ amount }) and mppx.session({ maxAmount }) to enforce payments, implements the full 402 challenge-response flow (challenge, verify proof of payment, add Payment-Receipt), and references Stripe and on-chain verification. These are concrete, provider-specific payment integration points (including Stripe) and therefore enable direct financial execution.
Issues (2)
W011
MEDIUMThird-party content exposure detected (indirect prompt injection risk).
W009
MEDIUMDirect money access capability detected (payment gateways, crypto, banking).
Audit Metadata