{"id":41379,"date":"2026-10-19T12:31:50","date_gmt":"2026-10-19T04:31:50","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-102503"},"modified":"2026-10-19T12:31:50","modified_gmt":"2026-10-19T04:31:50","slug":"cve-2026-102503","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-102503","title":{"rendered":"CVE-2026-102503 &#8211; Missing Authentication for Critical Function (CWE-306) and Missing Authorization (CWE-862)"},"content":{"rendered":"<p>Missing Authentication for Critical Function (CWE-306) and Missing Authorization (CWE-862) in the \/libp2p-http ingress server (StartIngressServer in cmd\/sam-node\/node.go) in Google OSS Agent Mesh (SAM) versions 0.1.0-alpha.1 through 0.1.0-alpha.2 allow an unauthenticated remote libp2p peer to bypass Biscuit capability policy enforcement and invoke arbitrary registered backend services (including command\/stdio-backed MCP servers, A2A, and inference endpoints). While the MCP protocol stream handler enforces WithBiscuitAuth and Authorize checks, the parallel \/libp2p-http ingress routes requests directly to backend service handlers without verifying a Biscuit token or mesh enrollment. Users should upgrade to version 0.1.0-alpha.3 or later.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Missing Authentication for Critical Function (CWE-306) and Missing Authorization (CWE-862) in the \/libp2p-http ingress server (StartIngressServer in cmd\/sam-node\/node.go) in Google OSS Agent Mesh (SAM<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41379","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41379","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41379"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41379"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}