{"answers":{"affected":"1 open source package ship an affected version, including polymarket-kelly-stake-math.","exploited":"There is no known exploitation of MAL-2026-10070 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-10070 is a malicious package in polymarket-kelly-stake-math, published on 9 Jul 2026."},"fix_prompt":"MAL-2026-10070 is a malicious package: polymarket-kelly-stake-math (npm). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-10070/ (Markdown: https://insights.sbomify.com/MAL-2026-10070/index.md)","id":"MAL-2026-10070","markdown":"https://insights.sbomify.com/MAL-2026-10070/index.md","name":"MAL-2026-10070","record":{"aliases":["GHSA-q8cr-mw55-69x7"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"polymarket-kelly-stake-math@3.6.1 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.\n\nAny 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.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in polymarket-kelly-stake-math (npm)","id":"MAL-2026-10070","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":[],"package":"polymarket-kelly-stake-math","purl":"pkg:npm/polymarket-kelly-stake-math","source":"MAL-2026-10070"}],"products":null,"published":"2026-07-09","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-10070/"}