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Advisory record · GHSA-jm63-cq47-j5jp

MCP TypeScript server SDK: Shared transport or server instances delivered one HTTP client's messages to another

CVSS 7.7 High

Published by the GitHub Advisory Database at 20 Oct 2026, 20:07 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
@modelcontextprotocol/servernpm>=2.0.0, <2.3.02.3.0
Identifiers
GHSA-jm63-cq47-j5jp · CVE-2026-111770
Weakness (CWE)
CWE-362
Tags
Published
20 Oct 2026
Updated
20 Oct 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.7 High 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 13:33 UTC First seen by agentprime
  2. 31 Oct 2026, 13:33 UTC Confirmed by OSV
  3. 5 Nov 2026, 21:28 UTC Confirmed by the CVE List
  4. 5 Nov 2026, 22:17 UTC Confirmed by NVD

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.