CVE-2025-20321

Membership State Change in Splunk Search Head Cluster through a Cross-Site Request Forgery (CSRF) in Splunk Enterprise

State: Published
Severity: 6.5 Medium
Published: Jul 7, 2025
Updated: Jul 7, 2025
Reserved: Oct 10, 2024

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	cisco

Weaknesses

CWE-352 The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Affected Products

Product	Versions
Splunk EnterpriseSplunk	9.4 to before 9.4.3Affected 9.3 to before 9.3.5Affected 9.2 to before 9.2.7Affected 9.1 to before 9.1.10Affected
Splunk Enterprise CloudSplunk	9.3.2411 to before 9.3.2411.104Affected 9.3.2408 to before 9.3.2408.114Affected 9.2.2406 to before 9.2.2406.119Affected

References

https://advisory.splunk.com/advisories/SVD-2025-0704

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