CVE-2021-43801

HIGH

Mercurius 8.10.0-8.11.1 - Denial of Service via Malformed JSON to GraphQL Endpoint

Title source: llm
STIX 2.1

Description

Mercurius is a GraphQL adapter for Fastify. Any users from [email protected] to 8.11.1 are subjected to a denial of service attack by sending a malformed JSON to `/graphql` unless they are using a custom error handler. The vulnerability has been fixed in https://github.com/mercurius-js/mercurius/pull/678 and shipped as v8.11.2. As a workaround users may use a custom error handler.

References (3)

Core 3
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://github.com/mercurius-js/mercurius/issues/677

Scores

CVSS v3 7.5
EPSS 0.0152
EPSS Percentile 71.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-754
Status published
Products (2)
mercurius_project/mercurius 8.10.0 - 8.11.2
npm/mercurius 8.10.0 - 8.11.2npm
Published Dec 13, 2021
Tracked Since Feb 18, 2026