CVE-2025-20322: 
Splunk Enterprise vulnerability analysis and mitigation

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, a critical security vulnerability (CVE-2025-20322) was identified. The vulnerability allows an unauthenticated attacker to trigger a rolling restart in the Search Head Cluster through a Cross-Site Request Forgery (CSRF) attack. This vulnerability was discovered and disclosed on July 7, 2025, affecting the Splunk Web component of both Splunk Enterprise and Splunk Cloud Platform (NVD, Splunk Advisory).

The vulnerability is classified as a Cross-Site Request Forgery (CSRF) vulnerability (CWE-352) that specifically targets the Search Head Cluster functionality. The attack vector requires the attacker to craft a special SPL search command that can trigger a rolling restart when executed. The vulnerability has been assigned a CVSS v3.1 base score of 4.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L, indicating network accessibility, low attack complexity, no privileges required, but user interaction is needed (NVD).

If successfully exploited, this vulnerability can lead to a denial of service (DoS) condition in the Splunk environment through forced rolling restarts of the Search Head Cluster. The impact is particularly significant for organizations relying on Splunk's search functionality for their operations. However, the attack requires social engineering as the attacker must trick an administrator-level user into initiating the malicious request within their browser (Splunk Advisory).

The primary mitigation is to upgrade Splunk Enterprise to versions 9.4.3, 9.3.5, 9.2.7, 9.1.10, or higher. For Splunk Cloud Platform, updates are being actively monitored and patched by Splunk. As a workaround, organizations can disable Splunk Web, though this may impact functionality. For environments where immediate patching is not possible, administrators should be particularly vigilant about suspicious links and implement strong anti-phishing measures (Splunk Advisory).