CVE-2026-20255
MEDIUMImproper Input Validation through Classic Dashboards in Splunk Enterprise
Title source: cnaDescription
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.
References (1)
Core 1
Core References
Scores
CVSS v3
5.7
EPSS
0.0024
EPSS Percentile
14.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (10)
splunk/splunk
9.3.0 - 9.3.13
Splunk/Splunk Cloud Platform
10.1.2507 - 10.1.2507.23
Splunk/Splunk Cloud Platform
10.2.2510 - 10.2.2510.15
Splunk/Splunk Cloud Platform
10.3.2512 - 10.3.2512.13
Splunk/Splunk Cloud Platform
9.3.2411 - 9.3.2411.132
Splunk/Splunk Enterprise
10.0 - 10.0.7
Splunk/Splunk Enterprise
10.2 - 10.2.4
Splunk/Splunk Enterprise
9.3 - 9.3.13
Splunk/Splunk Enterprise
9.4 - 9.4.12
splunk/splunk_cloud_platform
9.3.2411 - 9.3.2411.132
Published
Jun 10, 2026
Tracked Since
Jun 11, 2026