Vuln Signal Radar
public-safe defensive signal
Agent JSON
HIGHpublic-safe

CVE-2026-54504

NVD: MCP Documentation Server is a local-first document management and semantic search server for AI coding agents. NVD: 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. NVD: startWebServer uses app.listen(PORT) without a host, which binds the unauthenticated document-management API to all interfaces rather than localhost.

CVSS
8.8 Severity
HIGH EPSS
0.0057 (45) KEV
-

Source-published summary

NVD: MCP Documentation Server is a local-first document management and semantic search server for AI coding agents. NVD: 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. NVD: startWebServer uses app.listen(PORT) without a host, which binds the unauthenticated document-management API to all interfaces rather than localhost.

Possible impact

Source describes code execution review. Possible impact: An attacker may be able to run code or commands on affected systems.

Affected context

Affected product or version requires source confirmation.

Remediation / advisory

Patch confirmed by source text; fixed version context: 1.13.1..

Why it matters

Source describes code execution review. Possible impact: An attacker may be able to run code or commands on affected systems.; CVSS 8.8 (HIGH); EPSS percentile 45; not listed in KEV; Patch confirmed by source text; fixed version context: 1.13.1; sources: NVD, OSV.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

exposure unknown

Impact tags

code execution review

Urgency reasons

CVSS HIGHvendor advisory presentrecent updateremediation reference present

Source-derived note

Summary derived from NVD / OSV description; unsafe procedural detail is not shown.

Redaction metadata

source summary used
True
fallback summary used
False
unsafe procedural detail present
false
raw source displayed
false
public summary redacted
true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.

Official references