CVE-2026-76355: The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. in Splunk Splunk Enterprise
Description
CVE-2026-76355 is a vulnerability in Splunk Enterprise versions 10.4 up to but not including 10.4.2. It allows an unauthenticated user to retrieve Edge Processor pipeline configuration information via a REST API endpoint when the Edge Processor feature is enabled. This occurs because the Edge Processor service endpoint lacks authentication controls. Versions prior to 10.4 are not affected.
CVSS v3.1
Score 7.5high
Affected software
Splunk
Splunk Enterprise
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In Splunk Enterprise versions >=10.4 and <10.4.2, the Edge Processor REST API endpoint does not enforce authentication, allowing unauthenticated users to access sensitive pipeline configuration data. The vulnerability arises from missing authentication controls on the Edge Processor service endpoint. This issue is specific to versions starting from 10.4 and is resolved in 10.4.2 and later.
Potential Impact
An unauthenticated attacker can retrieve sensitive configuration information related to the Edge Processor pipelines. This could lead to information disclosure that may aid further attacks or reconnaissance. The vulnerability does not allow modification or denial of service, but the confidentiality impact is high.
Mitigation Recommendations
Upgrade Splunk Enterprise to version 10.4.2 or later where this vulnerability is fixed. Since the vulnerability is due to missing authentication on the Edge Processor REST API endpoint, applying the official fix is the recommended remediation. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2026-08-19T12:02:03.628Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a862259acd9273b49a6fef7
Added to database: 08/19/2026, 21:38:33 UTC
Last enriched: 09/11/2026, 03:46:48 UTC
Last updated: 10/04/2026, 10:04:19 UTC
Views: 32
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