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CVE-2026-42559Published

RMCP is an official Rust SDK for the Model Context Protocol. Prior to version 1.4.0, the rmcp crate's Streamable HTTP server transport (crates/rmcp/src/transport/streamable_http_server/) did not validate the incoming Host header. This allow…

Exact source revision recorded 25 Oct 2026 10:17:15 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

nvd · CVE-2026-42559

Published

No affected-package array is stated in this source revision. Check its state and earlier observations; this does not establish that every package is unaffected.

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Sources read 28 Oct 11:30 UTC · 270 of 272 readable · 268 fully read · documentation 469/469 current

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