CVE-2026-20240
Last modified
CVE-2026-20240 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Splunk | Splunk | >= 9.3.0, < 9.3.12 |
| Splunk | Splunk | >= 9.4.0, < 9.4.11 |
| Splunk | Splunk | >= 10.0.0, < 10.0.5 |
| Splunk | Splunk | >= 10.2.0, < 10.2.2 |
| Splunk | Splunk Cloud Platform | >= 9.3.2411, < 9.3.2411.129 |
| Splunk | Splunk Cloud Platform | >= 10.0.2503, < 10.0.2503.13 |
| Splunk | Splunk Cloud Platform | >= 10.1.2507, < 10.1.2507.21 |
| Splunk | Splunk Cloud Platform | >= 10.2.2510, < 10.2.2510.11 |
| Splunk | Splunk Cloud Platform | >= 10.3.2512, < 10.3.2512.9 |
| Splunk | Splunk Cloud Platform | 10.4.2603 |
References
- https://advisory.splunk.com/advisories/SVD-2026-0504Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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