CVE-2023-22477

HIGH
Published Jan 9, 20233y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Jan 9, 2023 3y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-248

Affected Products 2

VendorProductVersionRange
mercurius_projectmercurius* <8.13.2
mercurius_projectmercurius*≥9.0.0  –  <11.5.0

References 3

  • github.com https://github.com/mercurius-js/mercurius/issues/939
    ExploitIssue TrackingThird Party Advisory
  • github.com https://github.com/mercurius-js/mercurius/pull/940
    PatchThird Party Advisory
  • github.com https://github.com/mercurius-js/mercurius/security/advisories/GHSA-cm8h-q92v-xcfc
    PatchThird Party Advisory

Remediation

  • github.com https://github.com/mercurius-js/mercurius/pull/940
    PatchThird Party Advisory
  • github.com https://github.com/mercurius-js/mercurius/security/advisories/GHSA-cm8h-q92v-xcfc
    PatchThird Party Advisory