Ensure listChanged notifications are rate-limited to prevent client flooding

СредњаНиво 2Аутоматскаmcp-server

Опис

The server applies rate limiting or debouncing per notification type to list_changed notifications and other server-to-client event emissions, to prevent client floods and denial-of-service conditions. Under the 2026-07-28 revision, these notifications flow on the subscriptions/listen stream to clients that opted into the corresponding type through toolsListChanged, promptsListChanged, or resourcesListChanged. Each type is an independent subscription, so the throttle applies per type on that stream. The server enforces a minimum interval between two successive list_changed notifications of the same type, and batches or applies cool- down logic to high-frequency change events. The server logs the rate of its notification emissions so anomalous spikes can be detected. A server that emits list_changed notifications without throttling can flood a client that has opened a subscriptions/lis...

Како се проверава

Метод провере: Команда љуске

shell

cfg="${MCP_CONFIG:-/etc/mcp/server.json}"; [ -f "$cfg" ] || { echo "missing $cfg (set MCP_CONFIG)"; exit 1; }; grep -Eq '"cis_5_2_1"|"protocolVersion"|"capabilities"|"auth"' "$cfg" && echo compliant || echo "non-compliant: section 5.2.1"

Очекивани излаз: compliant

Како се исправља

Метод исправке: Смерница или закрпа инфраструктуре

Configure a minimum interval between two successive list_changed notifications of the same type on the subscriptions/listen stream, and batch or debounce rapid change events of a type into consolidated notifications rather than one per change. Configure the audit log to record notification emissions with a timestamp and the notification method so anomalous per-type rates can be detected. This is server configuration, and there is no portable command.

Својства

Оперативни системи: Било који
Ознаке: aimcpmcp-server
Референца: CIS MCP Server Benchmark v1.0.0 - 5.2.1 Ensure listChanged notifications are rate-limited to prevent client flooding

Проверите овај рачунар

Покрените ово на рачунару за који имате дозволу за проверу. Скенирање ради у режиму само за читање.

shell

tmaegis scan --target mcp-server --level 2