CVE-2026-51996: geelen mcp-remote remote code execution in getServerUrlHash

CVE-2026-51996 · Severity: info · Published 2026-09-24

geelen mcp-remote is a tool that connects local MCP clients to remote MCP servers with authentication support. A vulnerability in the getServerUrlHash function allows a remote attacker to execute arbitrary code on systems using affected versions 0.1.16 through 0.1.38, potentially compromising the system or stealing sensitive data.

Technologies: Geelen Mcp-Remote. Vendors: Geelen.

Quick answers

Is CVE-2026-51996 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-51996 being exploited in the wild.
How severe is CVE-2026-51996?
Informational severity, published 24 September 2026.
Which products and versions are affected?
Geelen Mcp-Remote 0.1.16 through 0.1.38.
Is there a fix for CVE-2026-51996?
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-2026-51996 attacked?
It is attacked over the network.
Am I affected by CVE-2026-51996?
Check whether you run Geelen Mcp-Remote 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

The vulnerability exists in src/lib/utils.ts within the getServerUrlHash function, allowing remote code execution. An attacker can exploit this via network access to execute arbitrary code with the privileges of the process running mcp-remote. No patched version is explicitly confirmed in the advisory text.

Affected products

  • geelen mcp-remote 0.1.16 through 0.1.38

Timeline

  • 2026-09-24: disclosed

References

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