{"id":"CVE-2026-20204","state":"PUBLISHED","title":"Improper Handling and Insufficient Isolation of Specific Temporary Files in Splunk Enterprise","description":"In Splunk Enterprise versions below 10.2.1, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.5, 10.2.2510.9, 10.1.2507.19, 10.0.2503.13, and 9.3.2411.127, a low-privileged user that does not hold the `admin` or `power` Splunk roles could potentially perform a Remote Code Execution (RCE) by uploading a malicious file to the `$SPLUNK_HOME/var/run/splunk/apptemp` directory due to improper handling and insufficient isolation of temporary files within the `apptemp` directory.","publishedAt":"2026-04-15T15:17:54.019Z","updatedAt":"2026-04-16T03:55:29.794Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H","source":"cisco"},"assigner":"cisco","products":["Splunk Splunk Enterprise","Splunk Splunk Cloud Platform"],"affected":[{"vendor":"Splunk","product":"Splunk Enterprise","versions":[{"version":"10.2","status":"affected","lessThan":"10.2.1","versionType":"custom"},{"version":"10.0","status":"affected","lessThan":"10.0.5","versionType":"custom"},{"version":"9.4","status":"affected","lessThan":"9.4.10","versionType":"custom"},{"version":"9.3","status":"affected","lessThan":"9.3.11","versionType":"custom"}]},{"vendor":"Splunk","product":"Splunk Cloud Platform","versions":[{"version":"10.4.2603","status":"affected","lessThan":"Not Affected","versionType":"custom"},{"version":"10.3.2512","status":"affected","lessThan":"10.3.2512.5","versionType":"custom"},{"version":"10.2.2510","status":"affected","lessThan":"10.2.2510.9","versionType":"custom"},{"version":"10.1.2507","status":"affected","lessThan":"10.1.2507.19","versionType":"custom"},{"version":"10.0.2503","status":"affected","lessThan":"10.0.2503.13","versionType":"custom"},{"version":"9.3.2411","status":"affected","lessThan":"9.3.2411.127","versionType":"custom"}]}],"references":["https://advisory.splunk.com/advisories/SVD-2026-0403"],"weaknesses":["CWE-377"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/20xxx/CVE-2026-20204.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20204","state":"PUBLISHED","datePublished":"2026-04-15T15:17:54.019Z","dateUpdated":"2026-04-16T03:55:29.794Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2025-10-08T11:59:15.397Z"},"containers":{"cna":{"title":"Improper Handling and Insufficient Isolation of Specific Temporary Files in Splunk Enterprise","descriptions":[{"lang":"en","value":"In Splunk Enterprise versions below 10.2.1, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.5, 10.2.2510.9, 10.1.2507.19, 10.0.2503.13, and 9.3.2411.127, a low-privileged user that does not hold the `admin` or `power` Splunk roles could potentially perform a Remote Code Execution (RCE) by uploading a malicious file to the `$SPLUNK_HOME/var/run/splunk/apptemp` directory due to improper handling and insufficient isolation of temporary files within the `apptemp` directory."}],"affected":[{"vendor":"Splunk","product":"Splunk 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attack."}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2026-04-15T15:17:54.019Z"},"datePublic":"2026-04-15T00:00:00.000Z","source":{"advisory":"SVD-2026-0403"},"credits":[{"lang":"en","value":"Gabriel Nitu, Splunk"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-15T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-20204"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-16T03:55:29.794Z"}}]}}}