Is CVE-2026-15749 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-15749 being exploited in the wild.

How severe is CVE-2026-15749?

Medium severity, with a CVSS score of 5.3, published 14 July 2026.

Which products and versions are affected?

MasterGo Magic-Mcp up to 0.2.0.

Is there a fix for CVE-2026-15749?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-15749 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-15749?

Check whether you run MasterGo Magic-Mcp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-15749: mastergo-design mastergo-magic-mcp path traversal in mcp__C2d tool

CVE-2026-15749 · Severity: medium · CVSS 5.3 · Published 2026-07-14

A security vulnerability exists in MasterGo Magic MCP, a tool used to connect design software with AI models. An attacker with local access to the system can trick the software into reading sensitive files, such as passwords or private keys, and sending them to external servers. This could lead to the theft of confidential data from the machine where the software is running.

Technologies: MasterGo Magic-Mcp. Vendors: MasterGo.

Quick answers

Is CVE-2026-15749 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-15749 being exploited in the wild.
How severe is CVE-2026-15749?: Medium severity, with a CVSS score of 5.3, published 14 July 2026.
Which products and versions are affected?: MasterGo Magic-Mcp up to 0.2.0.
Is there a fix for CVE-2026-15749?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-15749 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-15749?: Check whether you run MasterGo Magic-Mcp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A path traversal vulnerability exists in the mcp__C2d component of mastergo-magic-mcp (up to version 0.2.0). The execute function in src/tools/get-c2d.ts accepts a filePath argument which is passed directly to fs.readFileSync without proper validation, sanitization, or scope checking. A local attacker can exploit this by providing a manipulated path (e.g., /etc/passwd or SSH keys), causing the application to read the file and subsequently POST its contents to the MasterGo backend API. While the primary attack vector is local (stdio MCP), it could potentially be exploited via prompt injection in AI agents using the tool. As of the advisory date, the project maintainers have not responded to the issue report.

Affected products

mastergo-design mastergo-magic-mcp up to 0.2.0

Timeline

2026-05-29: disclosed: Vulnerability discovered and reported via GitHub issue #88
2026-07-14: advisory: CVE published by VulDB/NVD

References

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