Description
MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 0.83.0, 1.0.1, and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 0.83.0, 1.0.1, and 1.1.1.
Published: 2026-03-31
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-hv2w-8mjj-jw22 MCP Java SDK has a Hardcoded Wildcard CORS (Access-Control-Allow-Origin: *)
History

Tue, 09 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
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. MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 0.83.0, 1.0.1, and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 0.83.0, 1.0.1, and 1.1.1.

Fri, 03 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Lfprojects
Lfprojects mcp Java Sdk
CPEs cpe:2.3:a:lfprojects:mcp_java_sdk:*:*:*:*:*:*:*:*
cpe:2.3:a:lfprojects:mcp_java_sdk:1.1.0:*:*:*:*:*:*:*
Vendors & Products Lfprojects
Lfprojects mcp Java Sdk

Fri, 03 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Modelcontextprotocol
Modelcontextprotocol java-sdk
Vendors & Products Modelcontextprotocol
Modelcontextprotocol java-sdk

Tue, 31 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 31 Mar 2026 16:00:00 +0000

Type Values Removed Values Added
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.
Title MCP Java SDK has a Hardcoded Wildcard CORS (Access-Control-Allow-Origin: *)
Weaknesses CWE-942
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Subscriptions

Lfprojects Mcp Java Sdk
Modelcontextprotocol Java-sdk
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-09T18:39:37.473Z

Reserved: 2026-03-26T16:22:29.034Z

Link: CVE-2026-34237

cve-icon Vulnrichment

Updated: 2026-03-31T18:50:16.963Z

cve-icon NVD

Status : Modified

Published: 2026-03-31T16:16:32.923

Modified: 2026-06-17T10:38:42.560

Link: CVE-2026-34237

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T23:45:15Z

Weaknesses