Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1 Knowledge Bundle Delta Processing improper authorization

Summaryinfo

A vulnerability identified as problematic has been detected in Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1. The affected element is an unknown function of the component Knowledge Bundle Delta Processing. Performing a manipulation results in improper authorization. This vulnerability is known as CVE-2026-76353. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

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. This affects some unknown functionality of the component Knowledge Bundle Delta Processing. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on integrity, and availability. The summary by CVE is:

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 submit a crafted knowledge bundle delta to delete arbitrary files accessible to Splunk Enterprise on a cluster manager. This could affect system integrity and disrupt service. The vulnerability is possible because knowledge bundle delta processing does not restrict removal paths to the staging directory and the endpoint does not enforce the expected authorization boundary. For more information see Knowledge bundle replication overview (https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/10.4/knowledge-bundle-replication/knowledge-bundle-replication-overview) in the Splunk documentation.

The advisory is shared at advisory.splunk.com. This vulnerability is uniquely identified as CVE-2026-76353 since 08/19/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

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

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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

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• 🔒
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CPE 2.2info

• 🔒
• 🔒
• 🔒

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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