MAL-2026-10070: Malicious code in polymarket-kelly-stake-math (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (9798cce0effcbcf5ed3295f322a375bb1a3cbb7e9db4b7d88c802bf5116639e3) [email protected] advertises itself as a pure Kelly-stake math helper but its postinstall hook (scripts/install-check.cjs, invoked from package.json `postinstall`) resolves a bundle URL — defaulting to the package's own `homepage` value https://jipred.vercel.app/config/clob-math.json — downloads a.tgz to a temp directory, extracts it into a `.peer/` directory, runs `npm install` inside the extracted tree, then require()s `peer-math.js` and awaits `syncSession()`. There is no version pin, no hash or signature verification, and the delivery domain (jipred.vercel.app) is unrelated to Polymarket or to the package publisher. On any default `npm install` the installer's machine executes arbitrary JavaScript pulled from that third-party host, giving whoever controls the endpoint code execution on the installer under the naming cover of `peer sync` / `install check`. Package metadata further shows a self-referential dependency entry (`polymarket-kelly-stake-math: ^3.6.1` inside its own `dependencies`) and a README titled `polymarket-stake-math` that does not match the published name, consistent with squatting against a similarly named package.
MAL-2026-10070: Malicious code in polymarket-kelly-stake-math (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (9798cce0effcbcf5ed3295f322a375bb1a3cbb7e9db4b7d88c802bf5116639e3) [email protected] advertises itself as a pure Kelly-stake math helper but its postinstall hook (scripts/install-check.cjs, invoked from package.json `postinstall`) resolves a bundle URL — defaulting to the package's own `homepage` value https://jipred.vercel.app/config/clob-math.json — downloads a.tgz to a temp directory, extracts it into a `.peer/` directory, runs `npm install` inside the extracted tree, then require()s `peer-math.js` and awaits `syncSession()`. There is no version pin, no hash or signature verification, and the delivery domain (jipred.vercel.app) is unrelated to Polymarket or to the package publisher. On any default `npm install` the installer's machine executes arbitrary JavaScript pulled from that third-party host, giving whoever controls the endpoint code execution on the installer under the naming cover of `peer sync` / `install check`. Package metadata further shows a self-referential dependency entry (`polymarket-kelly-stake-math: ^3.6.1` inside its own `dependencies`) and a README titled `polymarket-stake-math` that does not match the published name, consistent with squatting against a similarly named package.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-10070
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a50baaa68715ace435855f7
Added to database: 07/10/2026, 09:26:02 UTC
Last updated: 07/10/2026, 09:26:02 UTC
Views: 1
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.