modelcontextprotocol inspector up to 0.16.5 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in modelcontextprotocol inspector up to 0.16.5. Affected is an unknown function. Performing a manipulation results in cross site scripting. This vulnerability is reported as CVE-2025-58444. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in modelcontextprotocol inspector up to 0.16.5. This affects some unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-84. The web application improperly neutralizes user-controlled input for executable script disguised with URI encodings. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-58444 since 09/01/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 0.16.6 eliminates this vulnerability. Applying the patch 650f3090d26344a672026b737d81586595bb1f60 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-84 / CWE-79 / CWE-94
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: inspector 0.16.6
Patch: 650f3090d26344a672026b737d81586595bb1f60

Timelineinfo

09/01/2025 CVE reserved
09/09/2025 +8 days Advisory disclosed
09/09/2025 +0 days VulDB entry created
09/09/2025 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-g9hg-qhmf-q45m
Status: Confirmed

CVE: CVE-2025-58444 (🔒)
GCVE (CVE): GCVE-0-2025-58444
GCVE (VulDB): GCVE-100-323157

Entryinfo

Created: 09/09/2025 08:14
Changes: 09/09/2025 08:14 (68)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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