Medium severity · published Jun 10, 2026
CVE-2026-20258
Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise
5.4
CVSS
0.2%
EPSS
No
On KEV
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 10.3.2512.11, 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 store a malicious script in a classic dashboard HTML panel, causing unauthorized JavaScript code to execute in the browser of another user. The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Splunk Cloud Platform · Splunk
10.3.2512 before 10.3.2512.11; 10.2.2510 before 10.2.2510.15; 10.1.2507 before 10.1.2507.23; 9.3.2411 before 9.3.2411.132 · source: vendor, NVD
SE
Splunk Enterprise · Splunk
10.2 before 10.2.4; 10.0 before 10.0.7; 9.4 before 9.4.12; 9.3 before 9.3.13 · source: vendor
SP
Splunk · Splunk
9.3.0 before 9.3.13; 9.4.0 before 9.4.12; 10.0.0 before 10.0.7; 10.2.0 before 10.2.4 · source: NVD
Affected product
SC
Splunk Cloud Platform
Splunk
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