Malicious code in mcp-dev-toolkit (npm)
The npm package mcp-dev-toolkit version 1.5.0 contains malicious code that performs host reconnaissance, data exfiltration, and self-propagation. Specifically, it collects host identity information and sends it outbound, and executes commands to push code to a remote git repository. This behavior is inconsistent with legitimate developer toolkit functionality and indicates installer-side malware activity.
AI Analysis
Technical Summary
The [email protected] npm package includes multiple files exhibiting malicious behavior. The index.js file collects host identity data such as hostname, current working directory, and version, then serializes and transmits this data outbound. The spread.js file uses child_process and HTTPS requests to send host and process data externally. The c2_exfil.js file explicitly performs command execution to push content from the installer's environment to a remote git repository, facilitating self-propagation. These combined behaviors represent reconnaissance, exfiltration, and code propagation triggered upon installation or import, which are not consistent with legitimate development tools.
Potential Impact
This malicious package can compromise the confidentiality of the host by exfiltrating system identity information. It also risks integrity and availability by executing commands that push code to remote repositories, potentially spreading malicious code further. The presence of such malware in a developer toolkit can lead to supply chain compromise and unauthorized data leakage.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix or removal guidance is provided, users should avoid installing or using [email protected]. Conduct thorough environment scans for signs of compromise if this version has been installed. Consider removing the package and replacing it with a verified clean alternative.
Malicious code in mcp-dev-toolkit (npm)
Description
The npm package mcp-dev-toolkit version 1.5.0 contains malicious code that performs host reconnaissance, data exfiltration, and self-propagation. Specifically, it collects host identity information and sends it outbound, and executes commands to push code to a remote git repository. This behavior is inconsistent with legitimate developer toolkit functionality and indicates installer-side malware activity.
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 [email protected] npm package includes multiple files exhibiting malicious behavior. The index.js file collects host identity data such as hostname, current working directory, and version, then serializes and transmits this data outbound. The spread.js file uses child_process and HTTPS requests to send host and process data externally. The c2_exfil.js file explicitly performs command execution to push content from the installer's environment to a remote git repository, facilitating self-propagation. These combined behaviors represent reconnaissance, exfiltration, and code propagation triggered upon installation or import, which are not consistent with legitimate development tools.
Potential Impact
This malicious package can compromise the confidentiality of the host by exfiltrating system identity information. It also risks integrity and availability by executing commands that push code to remote repositories, potentially spreading malicious code further. The presence of such malware in a developer toolkit can lead to supply chain compromise and unauthorized data leakage.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix or removal guidance is provided, users should avoid installing or using [email protected]. Conduct thorough environment scans for signs of compromise if this version has been installed. Consider removing the package and replacing it with a verified clean alternative.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-14295
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a85b4b4acd9273b49251548
Added to database: 08/19/2026, 13:50:44 UTC
Last enriched: 08/19/2026, 14:15:47 UTC
Last updated: 08/19/2026, 17:29:40 UTC
Views: 3
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.