CVE-2026-35568

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.

PUBLISHED Reserved 2026-04-03 | Published 2026-04-07 | Updated 2026-04-08 | Assigner GitHub_M

Problem types

CWE-346: Origin Validation Error

Product status

References

github.com/...va-sdk/security/advisories/GHSA-8jxr-pr72-r468

github.com/modelcontextprotocol/java-sdk/releases/tag/v1.0.0

cve.org (CVE-2026-35568)

nvd.nist.gov (CVE-2026-35568)

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