{"id":"CVE-2025-20381","state":"PUBLISHED","title":"SPL commands allowlist controls bypass in Splunk MCP Server app through \"run_splunk_query\" MCP tool","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.","publishedAt":"2025-12-03T17:00:25.945Z","updatedAt":"2025-12-03T21:29:51.839Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","source":"cisco"},"assigner":"cisco","products":["Splunk Splunk MCP Server"],"affected":[{"vendor":"Splunk","product":"Splunk MCP Server","versions":[{"version":"0.2","status":"affected","lessThan":"0.2.4","versionType":"custom"}]}],"references":["https://advisory.splunk.com/advisories/SVD-2025-1210"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/20xxx/CVE-2025-20381.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-20381","state":"PUBLISHED","datePublished":"2025-12-03T17:00:25.945Z","dateUpdated":"2025-12-03T21:29:51.839Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2024-10-10T19:15:13.263Z"},"containers":{"cna":{"title":"SPL commands allowlist controls bypass in Splunk MCP Server app through \"run_splunk_query\" MCP tool","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."}],"affected":[{"vendor":"Splunk","product":"Splunk MCP Server","versions":[{"version":"0.2","status":"affected","lessThan":"0.2.4","versionType":"custom"}]}],"references":[{"url":"https://advisory.splunk.com/advisories/SVD-2025-1210"}],"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":[{"cweId":"CWE-863","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."}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2025-12-03T17:00:25.945Z"},"datePublic":"2025-12-03T00:00:00.000Z","source":{"advisory":"SVD-2025-1210"},"credits":[{"lang":"en","value":"Saket Pandey, Splunk"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-03T21:29:38.813869Z","id":"CVE-2025-20381","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-12-03T21:29:51.839Z"}}]}}}