# CVE-2026-20258: Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise

> CVE-2026-20258: Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise. CVSS 7.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-20258
Last updated: 2026-06-17T10:17:20Z

- Published: 2026-06-10 17:16 UTC · Updated: 2026-06-17 10:17 UTC · Assigner: cisco
- CVSS: 7.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS: 0.24%, 14th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-79

## 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.

## Affected vendors and products

- Splunk: Splunk Cloud Platform
- Splunk: Splunk Enterprise

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-20258)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-20258)
- [https://advisory.splunk.com/advisories/SVD-2026-0608](https://advisory.splunk.com/advisories/SVD-2026-0608)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-20258 · Markdown: https://rewindex.com/cve/CVE-2026-20258.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-20258 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:42.632Z