CVE-2026-20258CWE-79

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

High · published June 10, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
13.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00236 · 13.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-06-10T17:16Z
EPSS history
Timeline
  • 10 JUN 17:16Z
    Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise
    cvelistv5