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archive/Patch now/AIR-2025-0332
closedclosed 8 Sep 2025Patch now2 Disclosed vulnerabilityAI

CVE-2025-58444: MCP Inspector Vulnerable to Command Execution via XSS

MCP Inspector

An XSS flaw in the MCP Inspector allows untrusted remote MCP servers to inject scripts via crafted redirect URLs. This can be leveraged to trigger arbitrary command execution on a developer machine, and has been patched in version 0.16.6.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
8.6
EPSS
0.01 · top 47% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
8 Sep 2025
last update
8 Sep 2025
CVE ids
CVE-2025-58444other records

Timeline · 1

  1. 8 Sep 2025CVE-2025-58444: MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server

Sources · 1

Advisories and databases

  1. 2025-09-08
    CVE-2025-58444: MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server
    GitHub Advisory Database · github.com/advisories/GHSA-g9hg-qhmf-q45m

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
xssmcp
dates
happened 8 Sep 2025 · first reported 8 Sep 2025
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2025-58444: MCP Inspector Vulnerable to Command Execution via XSS

https://gcdradar.vercel.app/incidents/cve-2025-58444-mcp-inspector-vulnerable-to-command-execution · AIR-2025-0332 · closed 2025-09-08

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2025-09-08
- AI role: Attack on AI
- Products: MCP Inspector
- CVE ids: CVE-2025-58444
- CVSS: 8.6

## Summary

An XSS flaw in the MCP Inspector allows untrusted remote MCP servers to inject scripts via crafted redirect URLs. This can be leveraged to trigger arbitrary command execution on a developer machine, and has been patched in version 0.16.6.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2025-09-08: CVE-2025-58444: MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server (https://github.com/advisories/GHSA-g9hg-qhmf-q45m)

## Sources

- 2025-09-08 GitHub Advisory Database: CVE-2025-58444: MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server https://github.com/advisories/GHSA-g9hg-qhmf-q45m

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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