CVE-2026-20240
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.
Weakness: CWE-20
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Splunk Cloud Platform | SIEM & Log Management | cna-assigner |
| Cisco | Splunk Enterprise | SIEM & Log Management | cna-assigner |
Vendor-reported products (2)
- Splunk · Splunk Enterprise
- Splunk · Splunk Cloud Platform
Credit
Alex Hordijk (hordalex)