OCTOBER 12, 2026
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Case File

CVE-2026-54504

HIGH · CVSS 8.8 EPSS 0.57% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-17 · Last synced 2026-10-12

CyberRota Analysis

AI-Generated

The MCP Documentation Server versions 1.13.0 to 1.13.1 are vulnerable due to the Web UI binding to all network interfaces, allowing unauthenticated access to sensitive document management APIs. This exposure enables attackers on the same network to enumerate, read, insert, delete documents, and manipulate the knowledge base without credentials. Organizations using these versions should prioritize immediate upgrades to version 1.13.1 to mitigate the risk of unauthorized access.

Public Exploit Signal

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

Detected Signals
remote code execution code execution

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

CVE
CVE-2026-54504
Severity
HIGH
CVSS
8.8
EPSS
0.57%

Original NVD Description

MCP Documentation Server is a local-first document management and semantic search server for AI coding agents. From 1.13.0 until 1.13.1, the automatically started Web UI in src/server.ts calls startWebServer in src/web-server.ts with START_WEB_UI enabled by default and WEB_PORT set to 3080. startWebServer uses app.listen(PORT) without a host, which binds the unauthenticated document-management API to all interfaces rather than localhost. A network-reachable client can invoke GET /api/documents, GET /api/documents/:id, POST /api/documents, POST /api/search-all, DELETE /api/documents/:id, and GET /api/config without credentials to enumerate and read documents, search the corpus, insert or delete documents, and tamper with the MCP assistant's knowledge base. The service must be reachable from the attacker's LAN, VM network, container bridge, VPN, or another routed network, and the issue does not provide remote code execution. This issue is fixed in 1.13.1.