CVE-2026-76279: 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
Description
CVE-2026-76279 affects Splunk Enterprise versions prior to 10.4.3, 10.2.7, 10.0.10, and 9.4.15. It allows users with the run_collect capability to write events to internal indexes beyond their configured index access due to improper normalization of whitespace in index names during access checks.
CVSS v3.1
Score 4.3medium
Affected software
Splunk
Splunk Enterprise
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In Splunk Enterprise versions before 10.4.3, 10.2.7, 10.0.10, and 9.4.15, a vulnerability exists where the collect SPL command can be exploited by users with the run_collect capability to write events to internal indexes outside their authorized index access. This occurs because Splunk does not normalize whitespace in index names before enforcing index-access restrictions, enabling bypass of these controls.
Potential Impact
The vulnerability allows unauthorized data injection into internal indexes, potentially affecting data integrity. There is no confidentiality or availability impact reported. The CVSS score is 4.3 (medium severity), indicating limited impact primarily on data integrity.
Mitigation Recommendations
Upgrade Splunk Enterprise to version 10.4.3, 10.2.7, 10.0.10, or 9.4.15 or later where this issue is fixed. No other mitigations are specified. Patch status is confirmed by the affected version ranges indicating fixed versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2026-08-19T12:02:03.621Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac6b3c92cdf04f6567ed5d2
Added to database: 10/07/2026, 21:04:09 UTC
Last enriched: 10/07/2026, 21:19:10 UTC
Last updated: 10/07/2026, 21:19:10 UTC
Views: 7
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