# rmcp (crates.io) vulnerabilities Source: https://junglewise.ai/threats/technologies/rmcp Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/rmcp.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 8 vulnerabilities in rmcp (crates.io): 0 in the last 7 days and 7 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, RUSTSEC-2026-0462 - Unbounded response body buffering in Streamable HTTP clients, was published on 5 November 2026. 3 vulnerabilities in the last four weeks, down 25% on the four before (4). ## Counts - Last 7 days: 0 - Last 30 days: 3 - Last 90 days: 7 - All time: 8 (0 critical, 0 exploited in the wild) ## About rmcp (crates.io) The rmcp crate is a Rust implementation of the Remote Management Control Protocol. ## Latest rmcp (crates.io) vulnerabilities - [RUSTSEC-2026-0462 - Unbounded response body buffering in Streamable HTTP clients](https://junglewise.ai/threats/rustsec-2026-0462-unbounded-response-body-buffering-in-streamable-http-3cfaf6d0) (low, CVSS 3.1, published 5 Nov 2026) - [rmcp OAuth client SSRF via unresolved hostnames](https://junglewise.ai/threats/rustsec-2026-0457-oauth-client-ssrf-filter-checks-host-strings-not-26bba63d) (info, published 22 Oct 2026) - [RUSTSEC-2026-0461 - Unbounded tool schema cache in Streamable HTTP server transport](https://junglewise.ai/threats/rustsec-2026-0461-unbounded-tool-schema-cache-in-streamable-http-server-35418a7a) (low, CVSS 3.1, published 20 Oct 2026) - [rmcp OAuth client SSRF via server-controlled resource_metadata URL](https://junglewise.ai/threats/rmcp-oauth-client-fetches-server-controlled-resource-metadata-urls-6efc52a6) (medium, CVSS 4, published 2 Oct 2026) - [CVE-2026-64684: Model Context Protocol Rust SDK custom header leak on cross-origin redirects](https://junglewise.ai/threats/cve-2026-64684-model-context-protocol-rust-sdk-custom-header-leak-on-cross) (medium, CVSS 6.8, published 16 Sep 2026) - [CVE-2026-63128: RMCP Streamable HTTP server unauthenticated session-table memory leak](https://junglewise.ai/threats/cve-2026-63128-rmcp-streamable-http-server-unauthenticated-session-table-memory) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-63127: RMCP missing resource field validation in OAuth metadata](https://junglewise.ai/threats/cve-2026-63127-rmcp-missing-resource-field-validation-in-oauth-metadata) (high, CVSS 8.2, published 16 Sep 2026) - [CVE-2026-42559: Model Context Protocol RMCP DNS rebinding in Streamable HTTP server](https://junglewise.ai/threats/cve-2026-42559-model-context-protocol-rmcp-dns-rebinding-in-streamable-http) (high, CVSS 8.8, published 14 May 2026) ## Most severe rmcp (crates.io) vulnerabilities - [CVE-2026-42559: Model Context Protocol RMCP DNS rebinding in Streamable HTTP server](https://junglewise.ai/threats/cve-2026-42559-model-context-protocol-rmcp-dns-rebinding-in-streamable-http) (high, CVSS 8.8, published 14 May 2026) - [CVE-2026-63127: RMCP missing resource field validation in OAuth metadata](https://junglewise.ai/threats/cve-2026-63127-rmcp-missing-resource-field-validation-in-oauth-metadata) (high, CVSS 8.2, published 16 Sep 2026) - [CVE-2026-63128: RMCP Streamable HTTP server unauthenticated session-table memory leak](https://junglewise.ai/threats/cve-2026-63128-rmcp-streamable-http-server-unauthenticated-session-table-memory) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-64684: Model Context Protocol Rust SDK custom header leak on cross-origin redirects](https://junglewise.ai/threats/cve-2026-64684-model-context-protocol-rust-sdk-custom-header-leak-on-cross) (medium, CVSS 6.8, published 16 Sep 2026) - [rmcp OAuth client SSRF via server-controlled resource_metadata URL](https://junglewise.ai/threats/rmcp-oauth-client-fetches-server-controlled-resource-metadata-urls-6efc52a6) (medium, CVSS 4, published 2 Oct 2026) - [RUSTSEC-2026-0462 - Unbounded response body buffering in Streamable HTTP clients](https://junglewise.ai/threats/rustsec-2026-0462-unbounded-response-body-buffering-in-streamable-http-3cfaf6d0) (low, CVSS 3.1, published 5 Nov 2026) - [RUSTSEC-2026-0461 - Unbounded tool schema cache in Streamable HTTP server transport](https://junglewise.ai/threats/rustsec-2026-0461-unbounded-tool-schema-cache-in-streamable-http-server-35418a7a) (low, CVSS 3.1, published 20 Oct 2026) - [rmcp OAuth client SSRF via unresolved hostnames](https://junglewise.ai/threats/rustsec-2026-0457-oauth-client-ssrf-filter-checks-host-strings-not-26bba63d) (info, published 22 Oct 2026) ## Vulnerabilities per week 3 vulnerabilities in the last four weeks, down 25% on the four before (4). | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 3 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 1 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 2 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 1 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other crates.io technologies - [surrealdb (crates.io)](https://junglewise.ai/threats/technologies/surrealdb): 83 vulnerabilities - [wasmtime (crates.io)](https://junglewise.ai/threats/technologies/wasmtime): 67 vulnerabilities - [deno (crates.io)](https://junglewise.ai/threats/technologies/deno): 39 vulnerabilities - [zebrad (crates.io)](https://junglewise.ai/threats/technologies/zebrad): 27 vulnerabilities - [russh (crates.io)](https://junglewise.ai/threats/technologies/crates-io-russh): 26 vulnerabilities - [openssl-src (crates.io)](https://junglewise.ai/threats/technologies/openssl-src): 26 vulnerabilities - [openssl (crates.io)](https://junglewise.ai/threats/technologies/crates-io-openssl): 25 vulnerabilities - [rustfs (crates.io)](https://junglewise.ai/threats/technologies/rustfs): 25 vulnerabilities - [coreutils (crates.io)](https://junglewise.ai/threats/technologies/crates-io-coreutils): 21 vulnerabilities - [ckb (crates.io)](https://junglewise.ai/threats/technologies/ckb): 19 vulnerabilities - [apollo-router (crates.io)](https://junglewise.ai/threats/technologies/apollo-router): 13 vulnerabilities - [deepseek-tui (crates.io)](https://junglewise.ai/threats/technologies/deepseek-tui): 13 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "rmcp (crates.io) vulnerabilities", https://junglewise.ai/threats/technologies/rmcp, 13 November 2026.