Malicious code in express-guardrail (npm)
The npm package express-guardrail versions 1.3.5 and 1.4.1 contain malicious code. Any system with this package installed should be considered fully compromised, as the package may provide an attacker full control. Immediate rotation of all secrets and keys stored on the affected system is strongly recommended. Simply removing the package does not guarantee removal of all malicious components.
AI Analysis
Technical Summary
The express-guardrail npm package versions 1.3.5 and 1.4.1 include malicious code that compromises any computer on which it is installed or running. The compromise is severe enough that all secrets and keys on the affected system must be rotated from a separate, trusted machine. Removal of the package alone is insufficient to ensure system integrity due to potential persistence of malicious software installed by the package.
Potential Impact
Systems with express-guardrail versions 1.3.5 or 1.4.1 installed are fully compromised, potentially allowing attackers complete control over the affected machine. This includes unauthorized access to secrets, keys, and other sensitive data. The compromise may persist beyond removal of the package, indicating possible installation of additional malicious software.
Mitigation Recommendations
Remove the express-guardrail package versions 1.3.5 and 1.4.1 immediately. Rotate all secrets and keys stored on the affected system from a separate, uncompromised machine. Conduct a thorough investigation and remediation of the affected system to identify and remove any additional malicious software. There is no official patch or fix; mitigation relies on removal and secret rotation.
Malicious code in express-guardrail (npm)
Description
The npm package express-guardrail versions 1.3.5 and 1.4.1 contain malicious code. Any system with this package installed should be considered fully compromised, as the package may provide an attacker full control. Immediate rotation of all secrets and keys stored on the affected system is strongly recommended. Simply removing the package does not guarantee removal of all malicious components.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The express-guardrail npm package versions 1.3.5 and 1.4.1 include malicious code that compromises any computer on which it is installed or running. The compromise is severe enough that all secrets and keys on the affected system must be rotated from a separate, trusted machine. Removal of the package alone is insufficient to ensure system integrity due to potential persistence of malicious software installed by the package.
Potential Impact
Systems with express-guardrail versions 1.3.5 or 1.4.1 installed are fully compromised, potentially allowing attackers complete control over the affected machine. This includes unauthorized access to secrets, keys, and other sensitive data. The compromise may persist beyond removal of the package, indicating possible installation of additional malicious software.
Mitigation Recommendations
Remove the express-guardrail package versions 1.3.5 and 1.4.1 immediately. Rotate all secrets and keys stored on the affected system from a separate, uncompromised machine. Conduct a thorough investigation and remediation of the affected system to identify and remove any additional malicious software. There is no official patch or fix; mitigation relies on removal and secret rotation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-6821
- Osv Schema Version
- 1.7.4
- Aliases
- ["GHSA-62qq-cf7w-23hx"]
- Ecosystems
- ["npm"]
Threat ID: 6a4c343c27e9c797195faeb1
Added to database: 07/06/2026, 23:03:24 UTC
Last enriched: 09/12/2026, 20:16:53 UTC
Last updated: 09/12/2026, 20:16:53 UTC
Views: 73
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