CVE-2026-76353: Path Traversal through Knowledge Bundle Replication in Splunk Enterprise
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Splunk Enterpriseto a version that resolves this vulnerability.Fixed in 10.4.2 - Upgrade
Upgrade
Splunk Enterpriseto a version that resolves this vulnerability.Fixed in 10.2.6 - Upgrade
Upgrade
Splunk Enterpriseto a version that resolves this vulnerability.Fixed in 10.0.9 - Upgrade
Upgrade
Splunk Enterpriseto a version that resolves this vulnerability.Fixed in 9.4.14
Event History
Frequently Asked Questions
Which deployments are exposed to this issue?
Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14 are affected where a cluster manager processes knowledge bundle delta submissions. The impact is deletion of files accessible to Splunk Enterprise on the cluster manager.
What access does an attacker need?
An attacker needs Splunk access sufficient to submit a crafted knowledge bundle delta. The issue specifically affects users who do not have the admin or power roles, because the endpoint does not enforce the expected authorization boundary.
What can an attacker do with successful exploitation?
A successful attacker can use crafted removal paths to delete arbitrary files that are accessible to the Splunk Enterprise process on the cluster manager. This can compromise system integrity and disrupt service.
Which versions contain the fix?
The fixed versions are 10.4.2, 10.2.6, 10.0.9, and 9.4.14. Deployments running versions below the applicable fixed release should be considered affected.