CVE-2023-22477

PoC —

CVSS 3.1

7.5 high

EPSS

1%p63

Published

Jan 9, 2023 (Jan 9, 2023)

Modified

Jun 17, 2026

Description

Mercurius is a GraphQL adapter for Fastify. Any users of Mercurius until version 10.5.0 are subjected to a denial of service attack by sending a malformed packet over WebSocket to `/graphql`. This issue was patched in #940. As a workaround, users can disable subscriptions.

Vendors: mercurius project
Products: mercurius
Weakness: CWE-248
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.1%)

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