CVE-2026-30241

Published: Mar 06, 2026 Last Modified: Mar 12, 2026
ExploitDB:
Other exploit source:
Google Dorks:
LOW 2,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 8,2
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: high

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0001
Percentile
0,0th
Updated

EPSS Score Trend (Last 10 Days)

863

Incorrect Authorization

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control Availability
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Bypass Protection Mechanism Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: Database Server, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
Application

Mercurius by Mercurius Project

Product Information
Vendor Mercurius Project
Product Mercurius
Version Range Affected
To 16.8.0 (exclusive)
cpe:2.3:a:mercurius_project:mercurius:*:*:*:*:*:node.js:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/mercurius-js/mercurius/commit/5b56f60f4b…
https://github.com/mercurius-js/mercurius/commit/5b56f60f4b0d60780b0ff499a479bd…
https://github.com/mercurius-js/mercurius/security/advisori…
https://github.com/mercurius-js/mercurius/security/advisories/GHSA-m4h2-mjfm-mp…