How severe is CVE-2025-58444?

CVE-2025-58444 has a CVSS 4.0 base score of 8.6, rated high severity.

Is CVE-2025-58444 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-58444?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-58444 have an EU (EUVD) identifier?

Yes. CVE-2025-58444 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27271.

When was CVE-2025-58444 published?

CVE-2025-58444 was published on 2025-09-08 and last updated on 2026-06-17.

CVE-2025-58444

CVE-2025-58444 is a high-severity vulnerability with a CVSS 4.0 base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-84.

Key facts

Severity: High (CVSS 4.0 base score 8.6)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27271
Weakness: CWE-84
Published: 2025-09-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-58444?: 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.
How severe is CVE-2025-58444?: CVE-2025-58444 has a CVSS 4.0 base score of 8.6, rated high severity.
Is CVE-2025-58444 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-58444?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-58444 have an EU (EUVD) identifier?: Yes. CVE-2025-58444 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27271.
When was CVE-2025-58444 published?: CVE-2025-58444 was published on 2025-09-08 and last updated on 2026-06-17.

References

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