{"id":"CVE-2026-79746","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-79746","summary":"MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.31,…","details":"MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.31, when a bearer key with accessType: 'servers' (or 'custom') is used against a group route, isBearerKeyAllowedForRequest grants access to the entire group as long as any single server in that group appears in the key's allowedServers list — not only when every server the key is scoped to matches, and critically, without ever re-checking allowedServers again once the group-level connection is authorized. A key explicitly scoped to one specific server therefore also grants full access to every other server that happens to share a group with it, including servers the key was never authorized for. This issue has been patched in version 1.0.31.","published":"2026-08-31T17:55:43.528Z","modified":"2026-08-31T17:55:43.528Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/samanhappy/mcphub/pull/1059","label":"samanhappy/mcphub#1059"},"references":[{"type":"WEB","url":"https://github.com/samanhappy/mcphub/security/advisories/GHSA-454m-4vm6-842f"},{"type":"WEB","url":"https://github.com/samanhappy/mcphub/pull/1059"},{"type":"WEB","url":"https://github.com/samanhappy/mcphub/commit/2b10ae36112ce68deebf910b22505d44efcef552"},{"type":"WEB","url":"https://github.com/samanhappy/mcphub/releases/tag/v1.0.31"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-31T17:55:43.528Z"}}