Malicious code in jsonupper (npm)
The npm package 'jsonupper' version 1.0.0 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 may not fully eliminate the malicious presence, as the attacker may have established persistent control.
AI Analysis
Technical Summary
The 'jsonupper' npm package version 1.0.0 has been identified as containing malicious code. Installation or execution of this package results in a full compromise of the host system, potentially allowing an attacker to gain complete control. Due to the severity of the compromise, all sensitive credentials on the affected system must be rotated from a separate, secure environment. The package removal does not guarantee eradication of all malicious components introduced by the attacker.
Potential Impact
Complete system compromise on any machine running or having installed 'jsonupper' version 1.0.0. This includes potential unauthorized access to all stored secrets and keys, which must be considered compromised and rotated immediately. The attacker may maintain persistent access beyond the presence of the malicious package itself.
Mitigation Recommendations
Remove the 'jsonupper' package version 1.0.0 immediately from all affected systems. Rotate all secrets and keys stored on compromised machines from a separate, secure computer. Due to the possibility of persistent compromise, consider rebuilding affected systems to ensure complete eradication of malicious code.
Malicious code in jsonupper (npm)
Description
The npm package 'jsonupper' version 1.0.0 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 may not fully eliminate the malicious presence, as the attacker may have established persistent control.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The 'jsonupper' npm package version 1.0.0 has been identified as containing malicious code. Installation or execution of this package results in a full compromise of the host system, potentially allowing an attacker to gain complete control. Due to the severity of the compromise, all sensitive credentials on the affected system must be rotated from a separate, secure environment. The package removal does not guarantee eradication of all malicious components introduced by the attacker.
Potential Impact
Complete system compromise on any machine running or having installed 'jsonupper' version 1.0.0. This includes potential unauthorized access to all stored secrets and keys, which must be considered compromised and rotated immediately. The attacker may maintain persistent access beyond the presence of the malicious package itself.
Defensive Guidance
Remove the 'jsonupper' package version 1.0.0 immediately from all affected systems. Rotate all secrets and keys stored on compromised machines from a separate, secure computer. Due to the possibility of persistent compromise, consider rebuilding affected systems to ensure complete eradication of malicious code.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-6841
- Osv Schema Version
- 1.7.4
- Aliases
- ["GHSA-7g6j-h5h4-7wjx"]
- Ecosystems
- ["npm"]
Threat ID: 6a4c343c27e9c797195faea2
Added to database: 07/06/2026, 23:03:24 UTC
Last enriched: 09/12/2026, 20:17:01 UTC
Last updated: 09/12/2026, 20:17:01 UTC
Views: 79
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
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
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.