MAL-2026-6800: Malicious code in big-numer (npm)
The npm package 'big-numer' version 5.0.5 contains malicious code that compromises any computer on which it is installed or running. The compromise is severe enough that all secrets and keys stored on the affected system should be rotated immediately from a different, trusted machine. Removing the package alone does not guarantee removal of all malicious software introduced by this package.
AI Analysis
Technical Summary
The 'big-numer' npm package version 5.0.5 is identified as containing malicious code that fully compromises affected systems. This malicious package grants attackers full control over the compromised computer. Due to the severity of the compromise, all sensitive credentials stored on the system must be considered exposed and rotated from a separate, secure environment. The package removal does not assure complete remediation as additional malicious artifacts may persist.
Potential Impact
Systems with 'big-numer' version 5.0.5 installed are fully compromised, risking exposure of all stored secrets and keys. Attackers may have persistent control beyond the presence of the package itself, leading to potential data theft, unauthorized access, and further system manipulation.
Mitigation Recommendations
Remove the 'big-numer' package version 5.0.5 immediately. Rotate all secrets and keys stored on the compromised system using a different, trusted computer. Because full system compromise is possible, consider rebuilding or thoroughly cleaning the affected system to ensure removal of all malicious components.
MAL-2026-6800: Malicious code in big-numer (npm)
Description
The npm package 'big-numer' version 5.0.5 contains malicious code that compromises any computer on which it is installed or running. The compromise is severe enough that all secrets and keys stored on the affected system should be rotated immediately from a different, trusted machine. Removing the package alone does not guarantee removal of all malicious software introduced by this package.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The 'big-numer' npm package version 5.0.5 is identified as containing malicious code that fully compromises affected systems. This malicious package grants attackers full control over the compromised computer. Due to the severity of the compromise, all sensitive credentials stored on the system must be considered exposed and rotated from a separate, secure environment. The package removal does not assure complete remediation as additional malicious artifacts may persist.
Potential Impact
Systems with 'big-numer' version 5.0.5 installed are fully compromised, risking exposure of all stored secrets and keys. Attackers may have persistent control beyond the presence of the package itself, leading to potential data theft, unauthorized access, and further system manipulation.
Mitigation Recommendations
Remove the 'big-numer' package version 5.0.5 immediately. Rotate all secrets and keys stored on the compromised system using a different, trusted computer. Because full system compromise is possible, consider rebuilding or thoroughly cleaning the affected system to ensure removal of all malicious components.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-6800
- Osv Schema Version
- 1.7.4
- Aliases
- ["GHSA-j5jp-xc7m-26vm"]
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a4c344327e9c797195fb5e5
Added to database: 07/06/2026, 23:03:31 UTC
Last enriched: 07/06/2026, 23:38:18 UTC
Last updated: 07/06/2026, 23:38:18 UTC
Views: 2
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