File alteration via NUL byte path traversal
Published Aug 19, 2026 · Updated Aug 20, 2026
Path traversal in Splunk Enterprise before 10.4.2, 10.2.6, 10.0.9, and 9.4.14 allows remote authenticated users to alter files via a REST API request. Search Head Clustering bundle replication accepts an attacker-controlled bundle filename, fails to neutralize NUL bytes, and uses the resulting truncated name when constructing the member bundle path on a cluster node. Exploitation requires a non-admin, non-power account and a non-captain search head cluster member, and the effect is limited to files writable by the Splunk Enterprise service account.
Summary
What happened
Path traversal in Splunk Enterprise before 10.4.2, 10.2.6, 10.0.9, and 9.4.14 allows remote authenticated users to alter files via a REST API request. Search Head Clustering bundle replication accepts an attacker-controlled bundle filename, fails to neutralize NUL bytes, and uses the resulting truncated name when constructing the member bundle path on a cluster node. Exploitation requires a non-admin, non-power account and a non-captain search head cluster member, and the effect is limited to files writable by the Splunk Enterprise service account.
The record
- CVE
- CVE-2026-76354
- Published
- Aug 19, 2026
- Updated
- Aug 20, 2026
- Vendor
- Zoom Video Communications, Inc.
- Product
- Splunk Enterprise
- Classifications
- CWE-158
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0 <10.0.9
- Affected versionversion=10.2 <10.2.6
- Affected versionversion=10.4 <10.4.2
- Affected versionversion=9.4 <9.4.14
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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