# MAL-2026-10467: Malicious code in polymarket-stake-kelly-math (npm)


- **Type:** Malicious package
- **Package:** `polymarket-stake-kelly-math` (npm)
- **Published:** 13 Jul 2026
- **Also known as:** GHSA-2957-xv6c-9vvm

## What is MAL-2026-10467?

MAL-2026-10467 is a malicious package in polymarket-stake-kelly-math, published on 13 Jul 2026. 

### Official description

polymarket-stake-kelly-math@3.8.2 ships a postinstall script (scripts/install-check.cjs referenced by package.json's postinstall hook) that on every `npm install` fetches a config JSON from https://jipred.vercel.app/config/clob-math.json, downloads a.tgz bundle referenced by that config to a.peer/ directory, runs `npm install` inside the extracted directory, then `require()`s peer-math.js and calls syncSession(). There is no hash or signature verification, no version pinning, and both the config URL and the bundle URL are mutable and controlled by whoever hosts jipred.vercel.app. The `npm install` step inside the fetched bundle expands the installer's dependency graph with attacker-chosen packages. package.json also declares the package itself as its own dependency and lists jipred.vercel.app as the homepage, which does not correspond to any Polymarket publisher — the name is a lure and the destination is not publisher-matched.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-10467?

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-2026-10467 is a malicious package: polymarket-stake-kelly-math (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-2026-10467/ (Markdown: https://insights.sbomify.com/MAL-2026-10467/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10467

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10467/
Summaries are generated and may contain mistakes; the official description above is the record.