8.6

CVE-2025-58444: modelcontextprotocol inspector

CVSS: 8.6v4.0HighDeferred
AliasesGHSA-g9hg-qhmf-q45m
Published 08-09-2025Last modified 09-09-2025
Open JSON

Vulnerability summary

CVE-2025-58444 is a high (CVSS 8.6) vulnerability in modelcontextprotocol inspector. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v4.0 (CVE.org)
EPSS score
0.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-09-2025
    PublishedVulnerability first disclosed.
  2. 09-09-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

0.00 pp

From 0.67% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

@modelcontextprotocol1 product
  • inspector< 0.16.6
Modelcontextprotocol1 product

2 vendors · 2 products

References

5 links