agent-router: MCP session resume does not verify the embedded anti-hijacking subject; default Helm seed makes session IDs forgeable
影響: go:github.com/envoyproxy/ai-gateway >= 0.4.0-rc1, < 1.2.0-rc1 → 1.2.0-rc1
The MCP proxy's client-facing session ID embeds the authenticated caller's subject (JWT sub claim) specifically as an anti-hijacking discriminator — matching the Model Context Protocol specification's documented session-hijacking guidance (https://modelcontextprotocol.io/specification/2025-06-18/basic/security_best_practices#session-hijacking). However, the session-resume path never checks that discriminator against the current caller's identity, so any client that obtains a session ID…
| 情報源 | GitHub Advisory Database |
|---|---|
| 取得日時 | 2026/10/22 01:17 |
| データ | Markdown JSON |
2026/10/20 01:53、GitHub Advisory Databaseが「agent-router: MCP session resume does not verify the embedded anti-hijacking subject; default Helm seed makes session IDs forgeable」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「警告」(medium) です。関連する技術: Go、GitHub。