Threats Tagged 'cve-2026-42559'
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Threats Tagged 'cve-2026-42559'
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CVE-2026-42559: CWE-346: Origin Validation Error in modelcontextprotocol rust-sdkCVE-2026-42559 0 CVE-2026-42559 is a high-severity vulnerability in the modelcontextprotocol Rust SDK (rmcp crate) prior to version 1. 4. 0. The Streamable HTTP server transport did not validate the incoming Host header, enabling a DNS rebinding attack. This flaw could allow a malicious website to send authenticated requests to an MCP server running on a victim's loopback or private network interface. The vulnerability is fixed in version 1. 4. 0. No known exploits in the wild have been reported. Join the discussion | CVE Database V5 | 05/14/2026, 14:24:56 UTC Added: 05/14/2026, 15:21:41 UTC |
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