{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-20381", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2024-10-10T19:15:13.263Z", "datePublished": "2025-12-03T17:00:25.945Z", "dateUpdated": "2025-12-03T17:00:25.945Z"}, "containers": {"cna": {"affected": [{"product": "Splunk MCP Server", "vendor": "Splunk", "versions": [{"version": "0.2", "status": "affected", "versionType": "custom", "lessThan": "0.2.4"}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "In Splunk MCP Server app versions below 0.2.4, a user with access to the \"run_splunk_query\" Model Context Protocol (MCP) tool could bypass the SPL command allowlist controls in MCP by embedding SPL commands as sub-searches, leading to unauthorized actions beyond the intended MCP restrictions."}], "value": "In Splunk MCP Server app versions below 0.2.4, a user with access to the \"run_splunk_query\" Model Context Protocol (MCP) tool could bypass the SPL command allowlist controls in MCP by embedding SPL commands as sub-searches, leading to unauthorized actions beyond the intended MCP restrictions."}], "references": [{"url": "https://advisory.splunk.com/advisories/SVD-2025-1210"}], "title": "SPL commands allowlist controls bypass in Splunk MCP Server app through \"run_splunk_query\" MCP tool", "datePublic": "2025-12-03T00:00:00.000Z", "metrics": [{"cvssV3_1": {"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1", "baseScore": 5.4, "baseSeverity": "MEDIUM"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "cwe", "description": "The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.", "cweId": "CWE-863"}]}], "source": {"advisory": "SVD-2025-1210"}, "credits": [{"lang": "en", "value": "Saket Pandey, Splunk"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2025-12-03T17:00:25.945Z"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In Splunk MCP Server app versions below 0.2.4, a user with access to the \"run_splunk_query\" Model Context Protocol (MCP) tool could bypass the SPL command allowlist controls in MCP by embedding SPL commands as sub-searches, leading to unauthorized actions beyond the intended MCP restrictions."}], "id": "CVE-2025-20381", "lastModified": "2025-12-03T17:15:50.180", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "psirt@cisco.com", "type": "Primary"}]}, "published": "2025-12-03T17:15:50.180", "references": [{"source": "psirt@cisco.com", "url": "https://advisory.splunk.com/advisories/SVD-2025-1210"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "psirt@cisco.com", "type": "Primary"}]}

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