CVE-2026-20255
Medium
Description
In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a malicious classic dashboard that exfiltrates sensitive data to an external server. The vulnerability exists because URL validation on the external content dialog is incomplete, which can allow for requests to untrusted domains when a user interacts with a crafted dashboard.
SeverityMedium
CVSS5.7
Exploit probability—
ProductSplunk
PublishedJun 10, 2026
First seenJun 10, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- splunk splunk9.3.13, 9.4.12, 10.0.7, 10.2.4 or later
- splunk splunk_cloud_platform9.3.2411.132, 10.1.2507.23, 10.2.2510.15, 10.3.2512.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| splunk splunk | 9.3.0 ≤ v < 9.3.13, 9.4.0 ≤ v < 9.4.12, 10.0.0 ≤ v < 10.0.7, 10.2.0 ≤ v < 10.2.4 | 9.3.13, 9.4.12, 10.0.7, 10.2.4 |
| splunk splunk_cloud_platform | 9.3.2411 ≤ v < 9.3.2411.132, 10.1.2507 ≤ v < 10.1.2507.23, 10.2.2510 ≤ v < 10.2.2510.15, 10.3.2512 ≤ v < 10.3.2512.13 | 9.3.2411.132, 10.1.2507.23, 10.2.2510.15, 10.3.2512.13 |
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