Splunk Enterprise <10.0.1: IP/Port Enum via change_auth
CVE-2025-20388 Published on December 3, 2025

Blind Server Side Request Forgery (SSRF) through Distributed Search Peers in Splunk Enterprise
In Splunk Enterprise versions below 10.0.1, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.4, 10.0.2503.7, and 9.3.2411.116, a user who holds a role that contains the high privilege capability `change_authentication` could enumerate internal IP addresses and network ports when adding new search peers to a Splunk search head in a distributed environment.

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-2025-20388 has been classified to as a SSRF vulnerability or weakness.


Products Associated with CVE-2025-20388

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Splunk
 
Splunk Cloud Platform
 

Affected Versions

Splunk Enterprise: Splunk Cloud Platform:

Exploit Probability

EPSS
0.04%
Percentile
13.25%

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.