Splunk SSO/SSRF: Unauth SSRF prior to 10.0.1 & 9.3.2411.109
CVE-2025-20371 Published on October 1, 2025

Unauthenticated Blind Server Side Request Forgery (SSRF) in Splunk Enterprise
In Splunk Enterprise versions below 10.0.1, 9.4.4, 9.3.6 and 9.2.8, and Splunk Cloud Platform versions below 9.3.2411.109, 9.3.2408.119 and 9.2.2406.122, an unauthenticated attacker could trigger a blind server-side request forgery (SSRF) potentially letting an attacker perform REST API calls on behalf of an authenticated high-privileged user.

NVD

Weakness Type

What is a SSRF Vulnerability?

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.

CVE-2025-20371 has been classified to as a SSRF vulnerability or weakness.


Products Associated with CVE-2025-20371

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Splunk
 
Splunk Cloud Platform
 

Affected Versions

Splunk Enterprise: Splunk Cloud Platform:

Exploit Probability

EPSS
0.11%
Percentile
28.56%

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.