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.
References (3)
Scores
CVSS v3
5.3
EPSS
0.0025
EPSS Percentile
47.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-248
Status
published
Products (2)
mercurius_project/mercurius
< 8.13.2
npm/mercurius
9.0.0 - 11.5.0npm
Published
Jan 09, 2023
Tracked Since
Feb 18, 2026