RMCP is an official Rust SDK for the Model Context Protocol. Prior to 2.0.0, the rmcp crate's stateful Streamable HTTP server in crates/rmcp/src/transport/streamable_http_server/tower.rs allows an unauthenticated client to send a well-forme…
Exact source revision recorded 28 Oct 2026 08:41:19 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-80823
PublishedRMCP is an official Rust SDK for the Model Context Protocol. Prior to 2.0.0, the rmcp crate's stateful Streamable HTTP server in crates/rmcp/src/transport/streamable_http_server/tower.rs allows an unauthenticated client to send a well-formed JSON-RPC POST that is not an initialization request, or an initialization request with a mismatched protocol header, causing StreamableHttpService::handle_post to call LocalSessionManager.create_session before validating the message. An early validation failure returns without removing the inserted LocalSessionHandle from LocalSessionManager.sessions, permanently retaining session and channel state for the server process lifetime. Repeated requests can grow the shared session table without bound, degrade legitimate-client latency through lock contention, exhaust memory, and terminate the server. This issue is fixed in version 2.0.0.
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Sep 16, 2026, 2:49:04 PM
dateUpdated: Sep 16, 2026, 3:18:37 PM
4 related source bulletins · separate from aliases
WID-SEC-W-2026-3883: Red Hat Enterprise Linux (goose, environment-modules, tornado): Mehrere Schwachstellen
CVE-2026-63127 · CVE-2026-63128 · CVE-2026-72718 · CVE-2026-93599 · CVE-2026-85013 · CVE-2026-103262
openSUSE-SU-2026:11849-1: openai-codex-0.155.1-1.1 on GA media
CVE-2026-63127 · CVE-2026-63128 · CVE-2026-64684
RHSA-2026:80765: Red Hat Security Advisory: goose security update
CVE-2026-63127 · CVE-2026-63128 · CVE-2026-72718 · CVE-2026-93599
RHSA-2026:80764: Red Hat Security Advisory: goose security update
CVE-2026-63127 · CVE-2026-63128 · CVE-2026-72718 · CVE-2026-93599
- Source published
- Sep 16, 2026, 2:49:04 PM (timezone not stated)
- Source modified
- Sep 16, 2026, 3:18:37 PM (timezone not stated)
- Observed here
- 28 Oct 2026 08:41:19 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H