Missing Authentication on /libp2p-http Ingress in Google OSS Agent Mesh (SAM)

Classification: Critical, Solution: Official Fix, Exploit Maturity: Proof-of-Concept, CVSSv4.0: 9.3, CVEs: CVE-2026-102503, Summary: A SAM node exposes its registered backend services (MCP / A2A / inference, including command/stdio-backed MCP servers) over two libp2p paths. The MCP-protocol path is wrapped in WithBiscuitAuth -> Authorize, which enforces the node's biscuit policy (allowed_tools / allowed_targets). The parallel /libp2p-http ingress reaches the same backend service handlers with…

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CVE v události 1

CVE	hodnocení	KEV	EPSS
CVE-2026-102503	9.3 4.0 · Google	–	0.00

Hodnocení z katalogů, všechna, se stupnicí CVSS a vydavatelem. Rozpad vektoru je na stránce CVE. Advisory v textu uvádí CVSS 9.3.