Description

MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 1.0.1 and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 1.0.1 and 1.1.1.

INFO

Published Date :

2026-03-31T15:40:01.070Z

Last Modified :

2026-03-31T18:52:38.217Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34237 vulnerability.

Vendors Products
Lfprojects
  • Mcp Java Sdk
Modelcontextprotocol
  • Java-sdk
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34237.

URL Resource
https://github.com/modelcontextprotocol/java-sdk/blob/main/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletSseServerTransportProvider.java#L289 cve-icon cve-icon
https://github.com/modelcontextprotocol/java-sdk/blob/main/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletStreamableServerTransportProvider.java#L525 cve-icon cve-icon
https://github.com/modelcontextprotocol/java-sdk/security/advisories/GHSA-hv2w-8mjj-jw22 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact