CVE-2026-76387: The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program. in Splunk Splunk Enterprise Security
CVE-2026-76387 is a high-severity vulnerability in Splunk Enterprise Security version 8.6. A user with the mc_investigation_read capability can inject Search Processing Language (SPL) via Analyst Queue search filters due to improper validation of filter field names. This allows unauthorized access to data and system integrity within the scope of scheduled searches for that user. The issue arises because the product does not validate or incorrectly validates input that affects control or data flow. No official patch or remediation guidance is currently provided by the vendor.
AI Analysis
Technical Summary
In Splunk Enterprise Security versions below 8.6.1, the Analyst Queue search filter handling does not validate filter field names before including them in SPL searches. A user with the mc_investigation_read capability can exploit this to inject arbitrary SPL code, potentially accessing all relevant data and system integrity available to scheduled searches run by that user. This vulnerability stems from improper input validation affecting control and data flow within the application.
Potential Impact
Successful exploitation allows a user with limited privileges (mc_investigation_read capability) to perform SPL injection, potentially accessing sensitive data and affecting system integrity within the scope of scheduled searches. The vulnerability does not affect availability but has high confidentiality and integrity impacts as per the CVSS score of 8.1.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict the assignment of the mc_investigation_read capability to trusted users only and monitor for unusual SPL query behavior in Analyst Queue filters.
CVE-2026-76387: The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program. in Splunk Splunk Enterprise Security
Description
CVE-2026-76387 is a high-severity vulnerability in Splunk Enterprise Security version 8.6. A user with the mc_investigation_read capability can inject Search Processing Language (SPL) via Analyst Queue search filters due to improper validation of filter field names. This allows unauthorized access to data and system integrity within the scope of scheduled searches for that user. The issue arises because the product does not validate or incorrectly validates input that affects control or data flow. No official patch or remediation guidance is currently provided by the vendor.
CVSS v3.1
Score 8.1high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In Splunk Enterprise Security versions below 8.6.1, the Analyst Queue search filter handling does not validate filter field names before including them in SPL searches. A user with the mc_investigation_read capability can exploit this to inject arbitrary SPL code, potentially accessing all relevant data and system integrity available to scheduled searches run by that user. This vulnerability stems from improper input validation affecting control and data flow within the application.
Potential Impact
Successful exploitation allows a user with limited privileges (mc_investigation_read capability) to perform SPL injection, potentially accessing sensitive data and affecting system integrity within the scope of scheduled searches. The vulnerability does not affect availability but has high confidentiality and integrity impacts as per the CVSS score of 8.1.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict the assignment of the mc_investigation_read capability to trusted users only and monitor for unusual SPL query behavior in Analyst Queue filters.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2026-08-19T12:02:03.631Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a862260acd9273b49a7046f
Added to database: 08/19/2026, 21:38:40 UTC
Last enriched: 08/19/2026, 21:54:20 UTC
Last updated: 08/19/2026, 22:12:16 UTC
Views: 2
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