Detections
Analytics

Splunk Enterprise 10.0.0 < 10.0.4, 10.2.0 < 10.2.1 (SVD-2026-0305)

medium Nessus Plugin ID 301871

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-2026-0305 advisory.

 - In Splunk Enterprise versions below 10.2.1 and 10.0.4, and Splunk Cloud Platform versions below 10.2.2510.5, 10.1.2507.16, and 10.0.2503.12, a low-privileged user that does not hold the admin or power Splunk roles could retrieve the Observability Cloud API access token through the Discover Splunk Observability Cloud app due to improper access control. This vulnerability does not affect Splunk Enterprise versions below 9.4.9 and 9.3.10 because the Discover Splunk Observability Cloud app does not come with Splunk Enterprise. (CVE-2026-20166)

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 10.2.1, 10.0.4, or higher. Splunk is actively monitoring and patching Splunk Cloud Platform instances. To eliminate further risk and help ensure a high level of security in your environment, you must perform the following recommended actions after you upgrade Splunk Enterprise: Rotate the Observability API token (Create and manage organization access tokens using Splunk Observability Cloud).

See Also

https://advisory.splunk.com/advisories/SVD-2026-0305.html

Plugin Details

Severity: Medium

ID: 301871

File Name: splunk_1021_cve-2026-20166.nasl

Version: 1.1

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 3/11/2026

Updated: 3/11/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-20166

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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: 3/11/2026

Vulnerability Publication Date: 3/11/2026

Reference Information

CVE: CVE-2026-20166

CWE: 200