{"id":"CVE-2026-35568","summary":"MCP Java-SDK has a DNS Rebinding Vulnerability","details":"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.","aliases":["GHSA-8jxr-pr72-r468"],"modified":"2026-04-09T11:46:08.236404Z","published":"2026-04-07T21:06:10.438Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35568.json","cwe_ids":["CWE-346"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35568.json"},{"type":"WEB","url":"https://github.com/modelcontextprotocol/java-sdk/releases/tag/v1.0.0"},{"type":"ADVISORY","url":"https://github.com/modelcontextprotocol/java-sdk/security/advisories/GHSA-8jxr-pr72-r468"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35568"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/modelcontextprotocol/java-sdk","events":[{"introduced":"0"},{"fixed":"3c87155b9ac11ab3f72dfc01d2238510537de69a"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.0.0"}]}}],"versions":["v0.1.0","v0.3.0","v0.3.1","v0.4.0","v0.4.1","v0.4.2","v0.5.0","v0.6.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-35568.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}