MAL-2026-6664: Malicious code in hrb-cas-auth-js (npm)
The npm package hrb-cas-auth-js contains malicious code that compromises any computer on which it is installed or running. The presence of this package indicates a full system compromise, requiring immediate rotation of all secrets and keys from a separate, trusted machine. Removal of the package alone does not guarantee elimination of all malicious software introduced by it.
AI Analysis
Technical Summary
The hrb-cas-auth-js npm package is identified as containing malicious code that, when installed or executed, fully compromises the host system. This compromise potentially grants an attacker complete control over the affected computer. Due to the severity of the compromise, all secrets and keys stored on the system should be rotated immediately from a different, secure device. Simply uninstalling the package is insufficient to ensure removal of all malicious artifacts or backdoors introduced by the package.
Potential Impact
Full system compromise on any computer with the hrb-cas-auth-js package installed or running. This includes potential unauthorized access to all stored secrets and keys, which must be considered compromised and rotated. The malicious code may have installed additional persistent malware beyond the package itself.
Mitigation Recommendations
Remove the hrb-cas-auth-js package immediately. Rotate all secrets and keys from a different, uncompromised computer. Because the system is fully compromised, consider rebuilding or restoring the affected system from a known good backup to ensure complete removal of malicious software.
MAL-2026-6664: Malicious code in hrb-cas-auth-js (npm)
Description
The npm package hrb-cas-auth-js contains malicious code that compromises any computer on which it is installed or running. The presence of this package indicates a full system compromise, requiring immediate rotation of all secrets and keys from a separate, trusted machine. Removal of the package alone does not guarantee elimination of all malicious software introduced by it.
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 hrb-cas-auth-js npm package is identified as containing malicious code that, when installed or executed, fully compromises the host system. This compromise potentially grants an attacker complete control over the affected computer. Due to the severity of the compromise, all secrets and keys stored on the system should be rotated immediately from a different, secure device. Simply uninstalling the package is insufficient to ensure removal of all malicious artifacts or backdoors introduced by the package.
Potential Impact
Full system compromise on any computer with the hrb-cas-auth-js package installed or running. This includes potential unauthorized access to all stored secrets and keys, which must be considered compromised and rotated. The malicious code may have installed additional persistent malware beyond the package itself.
Mitigation Recommendations
Remove the hrb-cas-auth-js package immediately. Rotate all secrets and keys from a different, uncompromised computer. Because the system is fully compromised, consider rebuilding or restoring the affected system from a known good backup to ensure complete removal of malicious software.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-6664
- Osv Schema Version
- 1.7.4
- Aliases
- ["GHSA-fvhw-928m-gxmw"]
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a42ed4627e9c79719935bd8
Added to database: 06/29/2026, 22:10:14 UTC
Last enriched: 06/29/2026, 22:27:22 UTC
Last updated: 06/30/2026, 01:47:44 UTC
Views: 4
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.