CVE-2026-34237
Medium · 6.1CVSS
6.1
EPSS
0.3%
Published
Mar 31, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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