CVE-2026-76353
Received Received - Intake

File Deletion Vulnerability in Splunk Enterprise

Vulnerability report for CVE-2026-76353, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: Cisco Systems, Inc.

Description

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.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
splunk splunk_enterprise to 9.4.14 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-24 The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "../" sequences that can resolve to a location that is outside of that directory.

Attack-Flow Graph

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Executive Summary

This vulnerability affects Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14. A non-admin user can submit a crafted knowledge bundle delta to delete arbitrary files accessible to Splunk Enterprise on a cluster manager. This happens because the system does not restrict removal paths to the staging directory and lacks proper authorization checks.

Detection Guidance

Detecting this vulnerability requires checking Splunk Enterprise versions for affected releases (below 10.4.2, 10.2.6, 10.0.9, or 9.4.14). Use Splunk's built-in version check or run commands like 'splunk version' on the command line to verify installed versions.

Impact Analysis

This vulnerability could allow unauthorized file deletion on the cluster manager, potentially disrupting services and compromising system integrity. Attackers could target critical files, leading to service outages or data loss.

Mitigation Strategies

Upgrade Splunk Enterprise to a patched version (10.4.2, 10.2.6, 10.0.9, or 9.4.14 or later) immediately. Restrict non-admin users from submitting knowledge bundle deltas until the upgrade is complete.

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