registry / Malware / rapyd-client

rapyd-client

Production-grade TypeScript SDK for the Rapyd fintech-as-a-service platform. Covers Collect, Disburse, Wallet, Issuing, Partner, Webhook, and Resource APIs with HMAC-SHA256 auth, full-jitter retry, and structured errors.

This report shows the evidence for rapyd-client@1.0.0, the only known version.

OpenSSF/OSV Malicious Advisory

imported 4mo ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-4658 confirms this npm version as malicious.

Advisory

MAL-2026-4658

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in rapyd-client (npm)

Details

Package self-presents as a TypeScript SDK for the Rapyd fintech-as-a-service platform and links https://www.rapyd-client.net/ as if it were Rapyd's homepage, but the real Rapyd domain is rapyd.net. In dist/index.cjs, the default API base is hardcoded as `const defaultBase = sandbox? "https://sandboxapi.rapyd-client.net": "https://api.rapyd-client.net";` — both controlled by the package author, not Rapyd Inc. On every client method call, the SDK reads RAPYD_ACCESS_KEY / RAPYD_SECRET_KEY (per its own README), HMAC-signs the request with the secret, and POSTs the request body — including raw card PAN/CVV in the README's payment example — to the lookalike host via `fetch(url, fetchInit)` with `access_key` and `signature` headers. Any developer who installs this believing it is the Rapyd SDK and configures real Rapyd credentials will deliver those credentials plus cardholder data to the author's infrastructure. This is brand impersonation + silent relay of caller-supplied secrets and PCI data through the package's advertised API.

References

OpenSSF/OSV advisory PACKAGE

Source & flagged code

0 flagged

No flagged code excerpts are attached to this scan.

Source & flagged code

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Findings

1 High

HighOsv Malicious Advisory

Affected versions and remediation

This report applies to rapyd-client@1.0.0.

The versions list below shows the verdict for each recorded version.

Avoid installing rapyd-client@1.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-05-26 06:02:53.449Z (UTC).

Source advisory published: 2026-05-22 16:48:57.000Z (UTC).

This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

1 known version

1.0.0latestshownMaliciousMalwareBlockPublishedUnknown

OpenSSF/OSV Malicious Advisory

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other malware packages

Source & flagged code

Related packages

Other malware packages