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Case File

CVE-2023-22477

MEDIUM · CVSS 5.3 EPSS 1.06% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-01-09 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2023-22477
Severity
MEDIUM
CVSS
5.3
EPSS
1.06%

Original NVD 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.