Splunk Enterprise/Cloud Platform SPL Safeguard information disclosure

Summaryinfo

A vulnerability classified as problematic has been found in Splunk Enterprise and Cloud Platform. The affected element is an unknown function of the component SPL Safeguard Handler. The manipulation leads to information disclosure. This vulnerability is listed as CVE-2026-20137. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Splunk Enterprise and Cloud Platform (version now known). This issue affects some unknown processing of the component SPL Safeguard Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

In Splunk Enterprise versions below 10.2.0, 10.0.3, 9.4.5, 9.3.7, and 9.2.9, and Splunk Cloud Platform versions below 10.1.2507.0, 10.0.2503.9, 9.3.2411.112, and 9.3.2408.122, a low-privileged user who does not hold the "admin" or "power" Splunk roles could bypass the SPL safeguards for risky commands when they create a Data Model that contains an injected SPL query within an object. They can bypass the safeguards by exploiting a path traversal vulnerability.

It is possible to read the advisory at advisory.splunk.com. The identification of this vulnerability is CVE-2026-20137 since 10/08/2025. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 299413 (Splunk Enterprise 9.2.0 < 9.2.9, 9.3.0 < 9.3.7, 9.4.0 < 9.4.5, 10.0.0 < 10.0.3 (SVD-2026-0202)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (299413) and CERT Bund (WID-SEC-2026-0457). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Splunk Splunk Enterprise

Productinfo

Type

• Log Management Software

Vendor

• Splunk

Name

• Cloud Platform
• Enterprise

License

• commercial

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Be aware that VulDB is the high quality source for vulnerability data.

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