Splunk Enterprise/Cloud CSRF Causing SHC Restart & DoS (v <9.4.3)
CVE-2025-20322 Published on July 7, 2025
Denial of Service (DoS) in Search Head Cluster through Cross-Site Request Forgery (CSRF) in Splunk Enterprise
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, 9.3.2408.113, and 9.2.2406.119, an unauthenticated attacker could send a specially-crafted SPL search command that could trigger a rolling restart in the Search Head Cluster through a Cross-Site Request Forgery (CSRF), potentially leading to a denial of service (DoS).<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.<br><br>See [How rolling restart works](https://docs.splunk.com/Documentation/Splunk/9.4.2/DistSearch/RestartSHC) for more information.
Weakness Type
What is a Session Riding Vulnerability?
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. When a web server is designed to receive a request from a client without any mechanism for verifying that it was intentionally sent, then it might be possible for an attacker to trick a client into making an unintentional request to the web server which will be treated as an authentic request. This can be done via a URL, image load, XMLHttpRequest, etc. and can result in exposure of data or unintended code execution.
CVE-2025-20322 has been classified to as a Session Riding vulnerability or weakness.
Products Associated with CVE-2025-20322
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Affected Versions
Splunk Enterprise:- Version 9.4 and below 9.4.3 is affected.
- Version 9.3 and below 9.3.5 is affected.
- Version 9.2 and below 9.2.7 is affected.
- Version 9.1 and below 9.1.10 is affected.
- Version 9.3.2411 and below 9.3.2411.104 is affected.
- Version 9.3.2408 and below 9.3.2408.113 is affected.
- Version 9.2.2406 and below 9.2.2406.119 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.