{"id":"CVE-2025-58444","state":"PUBLISHED","title":"MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server","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.","publishedAt":"2025-09-08T21:24:58.821Z","updatedAt":"2025-09-09T13:31:04.737Z","severity":{"score":8.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["modelcontextprotocol inspector"],"affected":[{"vendor":"modelcontextprotocol","product":"inspector","versions":[{"version":"< 0.16.6","status":"affected"}]}],"references":["https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-g9hg-qhmf-q45m","https://github.com/modelcontextprotocol/inspector/commit/650f3090d26344a672026b737d81586595bb1f60"],"weaknesses":["CWE-84"],"ingestedAt":"2026-10-29T20:09:39.787Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/58xxx/CVE-2025-58444.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-58444","state":"PUBLISHED","datePublished":"2025-09-08T21:24:58.821Z","dateUpdated":"2025-09-09T13:31:04.737Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-09-01T20:03:06.533Z"},"containers":{"cna":{"title":"MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"modelcontextprotocol","product":"inspector","versions":[{"version":"< 0.16.6","status":"affected"}]}],"references":[{"url":"https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-g9hg-qhmf-q45m","name":"https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-g9hg-qhmf-q45m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/modelcontextprotocol/inspector/commit/650f3090d26344a672026b737d81586595bb1f60","name":"https://github.com/modelcontextprotocol/inspector/commit/650f3090d26344a672026b737d81586595bb1f60","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-84","lang":"en","description":"CWE-84: Improper Neutralization of Encoded URI Schemes in a Web Page","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-09-08T21:24:58.821Z"},"source":{"advisory":"GHSA-g9hg-qhmf-q45m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-09-09T13:16:35.277893Z","id":"CVE-2025-58444","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-09T13:31:04.737Z"}}]}}}