# MAL-2026-3182: Malicious code in redeem-onchain-sdk (npm)


- **Type:** Malicious package
- **Package:** `redeem-onchain-sdk` (npm)
- **Published:** 29 Apr 2026

## What is MAL-2026-3182?

MAL-2026-3182 is a malicious package in redeem-onchain-sdk, published on 29 Apr 2026. 

### Official description

redeem-onchain-sdk is a malicious npm package impersonating a Polymarket on-chain SDK. It collects SSH keys, AWS credentials, .npmrc tokens, Docker auth, Chrome saved logins, .env files, and a month of git commit history, then ships everything over a raw TCP socket to an AWS-hosted C2. Two triggers fire it: a require() side effect in the package's main entry point (added in v1.0.1) and a postinstall hook (added in v1.0.5). The payload lives in dist/proxy.js, later renamed dist/index5_test.js.

The package redeem-onchain-sdk was found to contain malicious code.

## What should I do about MAL-2026-3182?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-3182 is a malicious package: redeem-onchain-sdk (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-3182/ (Markdown: https://insights.sbomify.com/MAL-2026-3182/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-3182

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-3182/
Summaries are generated and may contain mistakes; the official description above is the record.