# CVE-2025-20321: Membership State Change in Splunk Search Head Cluster through a Cross-Site Request Forgery (CSRF) in Splunk Enterprise

> CVE-2025-20321: Membership State Change in Splunk Search Head Cluster through a Cross-Site Request Forgery (CSRF) in Splunk Enterprise. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-20321
Last updated: 2026-06-17T08:41:27Z

- Published: 2025-07-07 17:48 UTC · Updated: 2026-06-17 08:41 UTC · Assigner: cisco
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS: 0.20%, 10th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-352

## Description

In Splunk Enterprise versions below 9.4.3, 9.3.5, 9.2.7 and 9.1.10, and Splunk Cloud Platform versions below 9.3.2411.104, 9.3.2408.114, and 9.2.2406.119, an unauthenticated attacker can send a specially-crafted SPL search that could change the membership state in a Splunk Search Head Cluster (SHC) through a Cross-Site Request Forgery (CSRF), potentially leading to the removal of the captain or a member of the SHC.\<br\>\<br\>The vulnerability requires the attacker to phish the administrator-level victim by tricking them into initiating a request within their browser. The attacker should not be able to exploit the vulnerability at will.

## Affected vendors and products

- Splunk: Splunk Enterprise
- Splunk: Splunk Enterprise Cloud

## Tracked companies

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

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-20321)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-20321)
- [https://advisory.splunk.com/advisories/SVD-2025-0704](https://advisory.splunk.com/advisories/SVD-2025-0704)

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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-2025-20321 · Markdown: https://rewindex.com/cve/CVE-2025-20321.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-20321 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:06:10.678Z