{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20139", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2025-10-08T11:59:15.382Z", "datePublished": "2026-02-18T16:45:32.308Z", "dateUpdated": "2026-02-18T16:45:32.308Z"}, "containers": {"cna": {"affected": [{"product": "Splunk Enterprise", "vendor": "Splunk", "versions": [{"version": "10.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.2"}, {"version": "9.4", "status": "affected", "versionType": "custom", "lessThan": "9.4.8"}, {"version": "9.3", "status": "affected", "versionType": "custom", "lessThan": "9.3.9"}, {"version": "9.2", "status": "affected", "versionType": "custom", "lessThan": "9.2.12"}]}, {"product": "Splunk Cloud Platform", "vendor": "Splunk", "versions": [{"version": "10.2.2510", "status": "affected", "versionType": "custom", "lessThan": "10.2.2510.3"}, {"version": "10.1.2507", "status": "affected", "versionType": "custom", "lessThan": "10.1.2507.8"}, {"version": "10.0.2503", "status": "affected", "versionType": "custom", "lessThan": "10.0.2503.9"}, {"version": "9.3.2411", "status": "affected", "versionType": "custom", "lessThan": "9.3.2411.121"}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.8, 9.3.9, and 9.2.12, and Splunk Cloud Platform versions below 10.2.2510.3, 10.1.2507.8, 10.0.2503.9, and 9.3.2411.121, a low-privileged user that does not hold the \"admin\" or \"power\" Splunk roles could craft a malicious payload into the `realname`, `tz`, or `email` parameters of the `/splunkd/__raw/services/authentication/users/username` REST API endpoint when they change a password. This could potentially lead to a client\u2011side denial\u2011of\u2011service (DoS). The malicious payload might significantly slow page load times or render Splunk Web temporarily unresponsive."}], "value": "In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.8, 9.3.9, and 9.2.12, and Splunk Cloud Platform versions below 10.2.2510.3, 10.1.2507.8, 10.0.2503.9, and 9.3.2411.121, a low-privileged user that does not hold the \"admin\" or \"power\" Splunk roles could craft a malicious payload into the `realname`, `tz`, or `email` parameters of the `/splunkd/__raw/services/authentication/users/username` REST API endpoint when they change a password. This could potentially lead to a client\u2011side denial\u2011of\u2011service (DoS). The malicious payload might significantly slow page load times or render Splunk Web temporarily unresponsive."}], "references": [{"url": "https://advisory.splunk.com/advisories/SVD-2026-0204"}], "title": "Client-Side Denial of Service (DoS) through ''/splunkd/__raw/services/authentication/users/username'' REST API endpoint in Splunk Enterprise", "datePublic": "2026-02-18T00:00:00.000Z", "metrics": [{"cvssV3_1": {"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1", "baseScore": 4.3, "baseSeverity": "MEDIUM"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "cwe", "description": "The software does not properly control the allocation and maintenance of a limited resource thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.", "cweId": "CWE-400"}]}], "source": {"advisory": "SVD-2026-0204"}, "credits": [{"lang": "en", "value": "ST\u00d6K / Fredrik Alexandersson"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-02-18T16:45:32.308Z"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.8, 9.3.9, and 9.2.12, and Splunk Cloud Platform versions below 10.2.2510.3, 10.1.2507.8, 10.0.2503.9, and 9.3.2411.121, a low-privileged user that does not hold the \"admin\" or \"power\" Splunk roles could craft a malicious payload into the `realname`, `tz`, or `email` parameters of the `/splunkd/__raw/services/authentication/users/username` REST API endpoint when they change a password. This could potentially lead to a client\u2011side denial\u2011of\u2011service (DoS). The malicious payload might significantly slow page load times or render Splunk Web temporarily unresponsive."}], "id": "CVE-2026-20139", "lastModified": "2026-02-18T18:24:26.497", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "psirt@cisco.com", "type": "Primary"}]}, "published": "2026-02-18T18:24:26.497", "references": [{"source": "psirt@cisco.com", "url": "https://advisory.splunk.com/advisories/SVD-2026-0204"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "psirt@cisco.com", "type": "Primary"}]}

{}

{}