CVE-2026-63119

6.2 Moyenne

Publiée le 29/07/2026 à 22:17 · Modifiée le 24/10/2026 à 15:10 · Analyse NVD reportée · Source : security-advisories@github.com

Description

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to 0.23.0, MCP::Server::Transports::StdioTransport and MCP::Client::Stdio in the mcp gem use IO#gets without a byte limit, allowing a peer that sends data without a newline to exhaust process memory. This issue is fixed in version 0.23.0.

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Produits concernés

modelcontextprotocol ruby-sdk

Scores CVSS

Version	Score	Source	Vecteur
3.1	6.2 Moyenne	security-advisories@github.com	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-400
CWE-770

Références

https://github.com/modelcontextprotocol/ruby-sdk/commit/267b8fa6285453525c81ce43db6b7dcd7a8a8c2f
https://github.com/modelcontextprotocol/ruby-sdk/releases/tag/v0.23.0
https://github.com/modelcontextprotocol/ruby-sdk/security/advisories/GHSA-7683-3w9x-ch42
https://github.com/modelcontextprotocol/ruby-sdk/security/advisories/GHSA-7683-3w9x-ch42

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories