CVE-2026-20258

Published Jun 10, 2026

Last updated 4 days ago

Overview

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.
Source
psirt@cisco.com
NVD status
Undergoing Analysis

Risk scores

CVSS 3.1

Type
Primary
Base score
7.1
Impact score
5.9
Exploitability score
1.2
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

psirt@cisco.com
CWE-79

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.