{"id":"CVE-2026-20240","state":"PUBLISHED","title":"Denial of Service through coldToFrozen.sh Script in Splunk Enterprise","description":"In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the ‘admin’ or ‘power’ Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.<br><br>The Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.","publishedAt":"2026-05-20T16:32:05.687Z","updatedAt":"2026-05-20T17:47:46.372Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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":"10.2.2","versionType":"custom"},{"version":"10.0","status":"affected","lessThan":"10.0.5","versionType":"custom"},{"version":"9.4","status":"affected","lessThan":"9.4.11","versionType":"custom"},{"version":"9.3","status":"affected","lessThan":"9.3.12","versionType":"custom"}]},{"vendor":"Splunk","product":"Splunk Cloud Platform","versions":[{"version":"10.4.2603","status":"affected","lessThan":"10.4.2603.1","versionType":"custom"},{"version":"10.3.2512","status":"affected","lessThan":"10.3.2512.9","versionType":"custom"},{"version":"10.2.2510","status":"affected","lessThan":"10.2.2510.11","versionType":"custom"},{"version":"10.1.2507","status":"affected","lessThan":"10.1.2507.21","versionType":"custom"},{"version":"10.0.2503","status":"affected","lessThan":"10.0.2503.13","versionType":"custom"},{"version":"9.3.2411","status":"affected","lessThan":"9.3.2411.129","versionType":"custom"}]}],"references":["https://advisory.splunk.com/advisories/SVD-2026-0504"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/20xxx/CVE-2026-20240.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20240","state":"PUBLISHED","datePublished":"2026-05-20T16:32:05.687Z","dateUpdated":"2026-05-20T17:47:46.372Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2025-10-08T11:59:15.400Z"},"containers":{"cna":{"title":"Denial of Service through coldToFrozen.sh Script in Splunk Enterprise","descriptions":[{"lang":"en","value":"In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the ‘admin’ or ‘power’ Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.<br><br>The Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories."}],"affected":[{"vendor":"Splunk","product":"Splunk Enterprise","versions":[{"version":"10.2","status":"affected","lessThan":"10.2.2","versionType":"custom"},{"version":"10.0","status":"affected","lessThan":"10.0.5","versionType":"custom"},{"version":"9.4","status":"affected","lessThan":"9.4.11","versionType":"custom"},{"version":"9.3","status":"affected","lessThan":"9.3.12","versionType":"custom"}]},{"vendor":"Splunk","product":"Splunk Cloud Platform","versions":[{"version":"10.4.2603","status":"affected","lessThan":"10.4.2603.1","versionType":"custom"},{"version":"10.3.2512","status":"affected","lessThan":"10.3.2512.9","versionType":"custom"},{"version":"10.2.2510","status":"affected","lessThan":"10.2.2510.11","versionType":"custom"},{"version":"10.1.2507","status":"affected","lessThan":"10.1.2507.21","versionType":"custom"},{"version":"10.0.2503","status":"affected","lessThan":"10.0.2503.13","versionType":"custom"},{"version":"9.3.2411","status":"affected","lessThan":"9.3.2411.129","versionType":"custom"}]}],"references":[{"url":"https://advisory.splunk.com/advisories/SVD-2026-0504"}],"metrics":[{"cvssV3_1":{"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1","baseScore":7.1,"baseSeverity":"HIGH"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","type":"cwe","description":"The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program."}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2026-05-20T16:32:05.687Z"},"datePublic":"2026-05-20T00:00:00.000Z","source":{"advisory":"SVD-2026-0504"},"credits":[{"lang":"en","value":"Alex Hordijk (hordalex)"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-20T17:47:29.920729Z","id":"CVE-2026-20240","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":"2026-05-20T17:47:46.372Z"}}]}}}