Malicious code in polymarket-stake-kelly-math-check (npm)
The polymarket-stake-kelly-math-check npm package version 3.5.2 contains malicious code that executes a postinstall hook to download and run unverified remote code. This remote payload is fetched from a mutable, unauthenticated URL controlled by the package publisher, allowing arbitrary code execution on the host system. The package's installation process silently swallows errors, potentially hiding malicious activity. Any system with this package installed should be considered fully compromised, and secrets on that system must be rotated immediately.
AI Analysis
Technical Summary
The polymarket-stake-kelly-math-check npm package version 3.5.2 declares a postinstall hook that downloads a remote JSON configuration from an unauthenticated, mutable URL hosted on Vercel. It then downloads a tarball, extracts it, installs dependencies, and executes code from the extracted files. This process allows the package publisher to execute arbitrary code on any system installing this package. The package homepage is misleadingly set to the remote config URL. Errors during this process are suppressed, making detection difficult. The package is classified as malicious, and any system with it installed is considered fully compromised.
Potential Impact
Systems with polymarket-stake-kelly-math-check version 3.5.2 installed are at risk of full compromise due to arbitrary remote code execution during package installation. Attackers can gain control over the affected system, potentially accessing all stored secrets and keys. Removal of the package alone does not guarantee elimination of all malicious artifacts, as the attacker may have established persistent backdoors or other malware.
Mitigation Recommendations
Immediate removal of polymarket-stake-kelly-math-check version 3.5.2 from all systems is recommended. All secrets, keys, and credentials stored on affected systems should be rotated from a separate, uncompromised environment. Due to the high risk of full system compromise, a thorough incident response and forensic analysis should be conducted to identify and remediate any persistent malicious presence. No official patch or fix is available; the package is malicious by design.
Malicious code in polymarket-stake-kelly-math-check (npm)
Description
The polymarket-stake-kelly-math-check npm package version 3.5.2 contains malicious code that executes a postinstall hook to download and run unverified remote code. This remote payload is fetched from a mutable, unauthenticated URL controlled by the package publisher, allowing arbitrary code execution on the host system. The package's installation process silently swallows errors, potentially hiding malicious activity. Any system with this package installed should be considered fully compromised, and secrets on that system must be rotated immediately.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The polymarket-stake-kelly-math-check npm package version 3.5.2 declares a postinstall hook that downloads a remote JSON configuration from an unauthenticated, mutable URL hosted on Vercel. It then downloads a tarball, extracts it, installs dependencies, and executes code from the extracted files. This process allows the package publisher to execute arbitrary code on any system installing this package. The package homepage is misleadingly set to the remote config URL. Errors during this process are suppressed, making detection difficult. The package is classified as malicious, and any system with it installed is considered fully compromised.
Potential Impact
Systems with polymarket-stake-kelly-math-check version 3.5.2 installed are at risk of full compromise due to arbitrary remote code execution during package installation. Attackers can gain control over the affected system, potentially accessing all stored secrets and keys. Removal of the package alone does not guarantee elimination of all malicious artifacts, as the attacker may have established persistent backdoors or other malware.
Mitigation Recommendations
Immediate removal of polymarket-stake-kelly-math-check version 3.5.2 from all systems is recommended. All secrets, keys, and credentials stored on affected systems should be rotated from a separate, uncompromised environment. Due to the high risk of full system compromise, a thorough incident response and forensic analysis should be conducted to identify and remediate any persistent malicious presence. No official patch or fix is available; the package is malicious by design.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-10485
- Osv Schema Version
- 1.7.4
- Aliases
- ["GHSA-w387-g22r-3pw7"]
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a55ff8d68715ace432f48fe
Added to database: 07/14/2026, 09:21:17 UTC
Last enriched: 07/14/2026, 09:47:16 UTC
Last updated: 07/25/2026, 07:04:32 UTC
Views: 8
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