CVE-2026-15751 mastergo-design CVE debrief

Who should care

Defenders responsible for securing the mastergo-design mastergo-magic-mcp component should assess exposure and prioritize verification. This includes operators, platform administrators, vulnerability management teams, and security teams. They should review the component's configuration, ensure it is properly secured, and monitor for potential exploitation attempts.

Why it matters

CVE-2026-15751 is a path traversal vulnerability in mastergo-design mastergo-magic-mcp up to 0.2.0 that requires local access and has a low CVSS score of 1.9. Defenders should prioritize verifying the affected component and assessing exposure.

• Verify the affected component and assess exposure
• Review the component's configuration and ensure it is properly secured
• Monitor for potential exploitation attempts

Technical summary

The vulnerability is located in the function execute of the file mastergo/component-workflow.md of the component mcp__getComponentGenerator. The manipulation of the argument rootPath leads to path traversal. The vulnerability requires local access and has a low CVSS score of 1.9. Defenders should prioritize verifying the affected component and assessing exposure. The affected product or component is mastergo-design mastergo-magic-mcp up to 0.2.0, and the vulnerability class is path traversal. The likely operational impact is low, and the source-confidence limits are based on the available source corpus.

Defensive priority

Defenders should prioritize verifying the affected component and assessing exposure, as the vulnerability requires local access and has a low CVSS score of 1.9.

Recommended defensive actions

• Verify the affected component and assess exposure
• Review the component's configuration and ensure it is properly secured
• Monitor for potential exploitation attempts
• Perform vulnerability scanning and penetration testing
• Implement compensating controls for exposed systems
• Review and update incident response plans
• Track and document remediation efforts

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, but the vendor has not responded to the issue report. The exploit has been disclosed publicly and may be used. The vulnerability details are based on the available source corpus and may not be comprehensive. Defenders should verify the affected component and assess exposure.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.