CSRF in Splunk
CVE-2025-20321
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
EPSS: 0.002 (6.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Splunk
- Splunk Splunk_cloud_platform
- Splunk Enterprise — versions 9.4, 9.3, 9.2
- Splunk Enterprise Cloud — versions 9.3.2411, 9.3.2408, 9.2.2406
Weakness classification (CWE)
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20321?
- CVE-2025-20321 is a medium-severity vulnerability in Splunk, classified under Cross-Site Request Forgery (CSRF). CVSS score: 6.5/10. Published 2025-07-07.
- How severe is CVE-2025-20321?
- Medium severity. CVSS v3 base score is 6.5 out of 10.