Detections
Analytics

Splunk Enterprise 9.2.0 < 9.2.9, 9.3.0 < 9.3.7, 9.4.0 < 9.4.5, 10.0.0 < 10.0.1 (SVD-2025-1101)

low Nessus Plugin ID 275170

Synopsis

An application running on a remote web server host is affected by a vulnerability

Description

The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the SVD-2025-1101 advisory.

 - In Splunk Enterprise versions below 10.0.1, 9.4.5, 9.3.7, 9.2.9, and Splunk Cloud Platform versions below 10.0.2503.5, 9.3.2411.111, and 9.3.2408.121, an unauthenticated attacker could craft a malicious URL using the return_to parameter of the Splunk Web login endpoint. When an authenticated user visits the malicious URL, it could cause an unvalidated redirect to an external malicious site.To be successful, the attacker has to trick the victim into initiating a request from their browser. The unauthenticated attacker should not be able to exploit the vulnerability at will. (CVE-2025-20378)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade Splunk Enterprise to versions 10.0.1, 9.4.5, 9.3.7, 9.2.9, or higher.Splunk is actively monitoring and patching Splunk Cloud Platform instances.

See Also

https://advisory.splunk.com/advisories/SVD-2025-1101.html

Plugin Details

Severity: Low

ID: 275170

File Name: splunk_1001_cve-2025-20378.nasl

Version: 1.1

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 11/12/2025

Updated: 11/12/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2025-20378

CVSS v3

Risk Factor: Low

Base Score: 3.1

Temporal Score: 2.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:splunk:splunk

Required KB Items: Settings/ParanoidReport, installed_sw/Splunk

Exploit Ease: No known exploits are available

Patch Publication Date: 11/12/2025

Vulnerability Publication Date: 11/12/2025

Reference Information

CVE: CVE-2025-20378

CWE: 601