Mercurius's queryDepth limit bypassed for WebSocket subscriptions

CAO 8.2CVE-2026-30241 · GHSA-m4h2-mjfm-mp55 · Công bố 06/03/2026 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2026-30241 là lỗ hổng mức CAO (CVSS 8.2) ảnh hưởng mercurius (mercurius project), mercurius.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.40%, cao hơn 34.7% các lỗ hổng khác.
Cách xử lý: cập nhật lên 16.8.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
mercurius mercurius_project	`< 16.8.0`	`16.8.0`
mercurius npm	`< 16.8.0`	`16.8.0`

Mô tả

Description

Mercurius fails to enforce the configured queryDepth limit on GraphQL subscription queries received over WebSocket connections. The depth check is correctly applied to HTTP queries and mutations, but subscription queries are parsed and executed without invoking the depth validation. This allows a remote client to submit arbitrarily deeply nested subscription queries over WebSocket, bypassing the intended depth restriction. On schemas with recursive types, this can lead to denial of service through exponential data resolution on each subscription event.

Workarounds

Disable subscriptions and, in general, queries over the WebSocket.

Mô tả của NVD

Mercurius is a GraphQL adapter for Fastify. Prior to version 16.8.0, Mercurius fails to enforce the configured queryDepth limit on GraphQL subscription queries received over WebSocket connections. The depth check is correctly applied to HTTP queries and mutations, but subscription queries are parsed and executed without invoking the depth validation. This allows a remote client to submit arbitrarily deeply nested subscription queries over WebSocket, bypassing the intended depth restriction. On schemas with recursive types, this can lead to denial of service through exponential data resolution on each subscription event. This issue has been patched in version 16.8.0.