CyberCVE

CVE-2026-20258

Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise

Severity
High 7.1
CVSS 3.1
Exploited
Not listed
EPSS
0.002
14.6th percentile
Discovered by
Not disclosed
Published
Jun 10, 2026
Assigned by cisco

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.

Weakness: CWE-79

Affected products

Vendor Product Category Matched by

No product mapping yet — this CVE is pending taxonomy review.

Vendor-reported affected versions (2)
  • Splunk · Splunk Enterprise
  • Splunk · Splunk Cloud Platform

Credit

Tony Tong

References