High severity · published Sep 8, 2025
CVE-2025-58444
MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server
8.6
CVSS
0.7%
EPSS
No
On KEV
Description
The MCP inspector is a developer tool for testing and debugging MCP servers. A cross-site scripting issue was reported in versions of the MCP Inspector local development tool prior to 0.16.6 when connecting to untrusted remote MCP servers with a malicious redirect URI. This could be leveraged to interact directly with the inspector proxy to trigger arbitrary command execution. Users are advised to update to 0.16.6 to resolve this issue.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
inspector · modelcontextprotocol
< 0.16.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-58444
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-58444
github.com
https://github.com/modelcontextprotocol/inspector/commit/650f3090d26344a672026b737d81586595bb1f60
github.com
https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-g9hg-qhmf-q45m
More from inspector
9.4
CVE-2025-49596
MCP Inspector proxy server lacks authentication between the Inspector client and proxy
7.5
CVE-2026-119025
open 7.2.0 before 11.0.0 OS Command Injection via PowerShell on Windows