DoS via coldToFrozen.sh in Splunk Enterprise <10.2.2
CVE-2026-20240 Published on May 20, 2026
Denial of Service through coldToFrozen.sh Script in Splunk Enterprise
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.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-20240
stack.watch emails you whenever new vulnerabilities are published in Splunk or Splunk Cloud Platform. Just hit a watch button to start following.
Affected Versions
Splunk Enterprise:- Version 10.2 and below 10.2.2 is affected.
- Version 10.0 and below 10.0.5 is affected.
- Version 9.4 and below 9.4.11 is affected.
- Version 9.3 and below 9.3.12 is affected.
- Version 10.4.2603 and below 10.4.2603.1 is affected.
- Version 10.3.2512 and below 10.3.2512.9 is affected.
- Version 10.2.2510 and below 10.2.2510.11 is affected.
- Version 10.1.2507 and below 10.1.2507.21 is affected.
- Version 10.0.2503 and below 10.0.2503.13 is affected.
- Version 9.3.2411 and below 9.3.2411.129 is affected.