Medium [CVE-2026-76326] Stored Cross-Site Scripting through Dashboard Sparkline Tooltip Options in Splunk Enterprise
This medium-severity Splunk advisory covers CVE-2026-76326 affecting Splunk Enterprise.
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Summary
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 store a dashboard view that runs JavaScript in the browser of another user who opens it and hovers over a sparkline table cell, allowing for access to all relevant data and system integrity available to that user.
The vulnerability is possible because the dashboard table renderer does not sufficiently restrict tooltip options or escape tooltip content before display.
- Splunk Enterprise 10.4 before 10.4.2
- Splunk Enterprise 10.2 before 10.2.6
- Splunk Enterprise 10.0 before 10.0.9
- Splunk Enterprise 9.4 before 9.4.14
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- 10.4.2
- 10.2.6
- 10.0.9
- 9.4.14
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- The vulnerability is possible because the dashboard table renderer does not sufficiently restrict tooltip options or escape tooltip content before display.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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