SPL commands allowlist controls bypass in Splunk MCP Server app through “run_splunk_query” MCP tool_CVE-2025-20381

{
    "lastseen": "",
    "description": "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.",
    "published": "2025-12-03T17:00:25.945Z",
    "modified": "2025-12-03T21:29:51.839Z",
    "type": "cve",
    "title": "SPL commands allowlist controls bypass in Splunk MCP Server app through \"run_splunk_query\" MCP tool",
    "source": "cisco",
    "references": "https://advisory.splunk.com/advisories/SVD-2025-1210",
    "id": "CVE-2025-20381",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Splunk Splunk MCP Server 0.2",
    "sourceHref": "",
    "cvss": {
        "score": 5.4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Splunk MCP Server",
    "version": "0.2",
    "vendor": "Splunk",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}