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

published 2026-06-10 4 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-36089

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

Splunk Splunk Enterprise 9.3.13, 9.4.12, 10.0.7, 10.2.4
Splunk Splunk Cloud Platform 9.3.2411.132, 10.1.2507.23, 10.2.2510.15, 10.3.2512.11

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 4 mo ago (2026-06-10)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

Splunk Splunk Enterprise
Splunk Splunk Cloud Platform

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

advisory.splunk.com /advisories/SVD-2026-0608
vendor-advisory

Sources

CVE List CVE-2026-20258
NVD CVE-2026-20258

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary