CVE-2021-43801 describes a denial-of-service (DoS) vulnerability affecting Mercurius, a GraphQL adapter for Fastify, specifically versions 8.10.0 through 8.11.1. An attacker can trigger this DoS by sending a malformed JSON request to the /graphql endpoint, unless a custom error handler is in place. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 8.10.0, < 8.11.2CPE matchmatch criteria | cpe:2.3:a:mercurius_project:mercurius:*:*:*:*:*:node.js:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.