CVE-2026-35568
Medium
Description
MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to 1.0.0, the java-sdk contains a DNS rebinding vulnerability. This vulnerability allows an attacker to access a locally or network-private java-sdk MCP server via a victims browser that is either local, or network adjacent. This allows an attacker to make any tool call to the server as if they were a locally running MCP connected AI agent. This vulnerability is fixed in 1.0.0.
SeverityMedium
CVSS5.7
Exploit probability—
ProductLfprojects Mcp Java Sdk
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-346CWE-346
How to fix
Update
- lfprojects mcp_java_sdk1.0.0 or later
- io.modelcontextprotocol.sdk:mcp-core1.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| lfprojects mcp_java_sdk | v < 1.0.0 | 1.0.0 |
| io.modelcontextprotocol.sdk:mcp-coreMaven | v < 1.0.0 | 1.0.0 |
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