Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1 Search Head Clustering bundle replication neutralization

Summaryinfo

A vulnerability, which was classified as problematic, was found in Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1. Affected by this vulnerability is an unknown functionality of the component Search Head Clustering bundle replication. Executing a manipulation can lead to neutralization. The identification of this vulnerability is CVE-2026-76354. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1. It has been declared as problematic. This vulnerability affects some unknown functionality of the component Search Head Clustering bundle replication. The manipulation with an unknown input leads to a neutralization vulnerability. The CWE definition for the vulnerability is CWE-707. The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component. As an impact it is known to affect integrity, and availability. CVE summarizes:

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who does not hold the "admin" or "power" Splunk roles could affect system integrity and availability by sending a crafted Representational State Transfer (REST) API request that deletes or temporarily overwrites files writable by the user account running Splunk Enterprise processes on a non-captain search head cluster member. The vulnerability is possible because Search Head Clustering bundle replication does not validate the name of a replicated bundle file or neutralize NUL bytes before constructing the member bundle path. For more information see About search head clustering (https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/10.4/overview-of-search-head-clustering/about-search-head-clustering), Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities), and Secure Splunk Enterprise service accounts (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/9.0/install-splunk-enterprise-securely/secure-splunk-enterprise-service-accounts) in the Splunk documentation.

The advisory is available at advisory.splunk.com. This vulnerability was named CVE-2026-76354 since 08/19/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available.

Upgrading to version 9.4.14, 10.0.9, 10.2.6 or 10.4.2 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Log Management Software

Vendor

• Splunk

Name

• Enterprise

Version

• 9.4.0
• 9.4.1
• 9.4.2
• 9.4.3
• 9.4.4
• 9.4.5
• 9.4.6
• 9.4.7
• 9.4.8
• 9.4.9
• 9.4.10
• 9.4.11
• 9.4.12
• 9.4.13
• 10.0.0
• 10.0.1
• 10.0.2
• 10.0.3
• 10.0.4
• 10.0.5
• 10.0.6
• 10.0.7
• 10.0.8
• 10.2.0
• 10.2.1
• 10.2.2
• 10.2.3
• 10.2.4
• 10.2.5
• 10.4.0
• 10.4.1

License

• commercial

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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