CVE-2026-63119 in ruby-sdk

Riassunto

di MITRE • 29/07/2026

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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• Responsabile: GitHub M
• Prenotare: 15/07/2026
• Divulgazione: 29/07/2026
• Moderazione: accettato
• Voce: VDB-384271
• CPE: pronto
• CWE: CWE-770 (confermato)
• CVSS: 4.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Attività: molto basso
• Settore: Energy, Insurance, ...

Fonti

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-63119
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63119
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-63119/