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

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Summary

CVECVE-2026-20258
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-10 18:16:41 UTC
Updated2026-06-10 18:16:41 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.000410000 probability, percentile 0.129040000 (date 2026-06-14)

Problem Types: CWE-79 | CWE-79 The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.1HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
3.1CNACVSS7.1HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Splunk Splunk Enterprise affected 10.2 10.2.4 custom Not specified
CNA Splunk Splunk Enterprise affected 10.0 10.0.7 custom Not specified
CNA Splunk Splunk Enterprise affected 9.4 9.4.12 custom Not specified
CNA Splunk Splunk Enterprise affected 9.3 9.3.13 custom Not specified
CNA Splunk Splunk Cloud Platform affected 10.3.2512 10.3.2512.11 custom Not specified
CNA Splunk Splunk Cloud Platform affected 10.2.2510 10.2.2510.15 custom Not specified
CNA Splunk Splunk Cloud Platform affected 10.1.2507 10.1.2507.23 custom Not specified
CNA Splunk Splunk Cloud Platform affected 9.3.2411 9.3.2411.132 custom Not specified

References

ReferenceSourceLinkTags
advisory.splunk.com/advisories/SVD-2026-0608 [email protected] advisory.splunk.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Tony Tong (en)

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