CVE-2026-35568
MCP Java-SDK has a DNS Rebinding Vulnerability
- State
- Published
- Severity
- 7.6 High
- Published
- Apr 7, 2026
- Updated
- Apr 8, 2026
- Reserved
- Apr 3, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.6 High | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-346 Origin Validation Error
Affected Products
| Product | Versions |
|---|---|
java-sdkmodelcontextprotocol |
|
References
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