9.4

CVE-2025-49596: modelcontextprotocol inspector

CVSS: 9.4v4.0CriticalDeferred
AliasesGHSA-7f8r-222p-6f5g
Published 13-06-2025Last modified 09-07-2025
Open JSON

Vulnerability summary

CVE-2025-49596 is a critical (CVSS 9.4) vulnerability in modelcontextprotocol inspector. EPSS estimates a 44.45% chance of exploitation in the next 30 days, higher than 98.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.4/10
010
Critical · v4.0 (CVE.org)
EPSS score
44.45%
0%100%
High · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-06-2025
    PublishedVulnerability first disclosed.
  2. 09-07-2025
    Last modifiedVulnerability information updated.

Description

The MCP inspector is a developer tool for testing and debugging MCP servers. Versions of MCP Inspector below 0.14.1 are vulnerable to remote code execution due to lack of authentication between the Inspector client and proxy, allowing unauthenticated requests to launch MCP commands over stdio. Users should immediately upgrade to version 0.14.1 or later to address these vulnerabilities.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

44.45%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 44.45% on 20-09-2026

20-09-202620-10-2026
EPSS score
44.45%

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< 0.14.1
Modelcontextprotocol1 product

2 vendors · 2 products

References

6 links