CVE-2026-34237

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.

Risk Information

Base Score

6.1

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Score

Exploitation Probability

0.035

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2026-34237 are fixed in Modelcontextprotocol - mcp-core 1.0.1	Windows
Vulnerabilities CVE-2026-34237 are fixed in Modelcontextprotocol - mcp-core 1.1.1	Windows
Vulnerabilities CVE-2026-34237 are fixed in Modelcontextprotocol - mcp-core for Linux 1.0.1	Linux
Vulnerabilities CVE-2026-34237 are fixed in Modelcontextprotocol - mcp-core for Linux 1.1.1	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234