What’s Vulnerable › Vulnerabilities
CVE-2026-76326: Stored Cross-Site Scripting through Dashboard Sparkline Tooltip Options in Splunk Enterprise
- Severity: medium (CVSS 5.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-19 · updated 2026-08-26
- Weakness: CWE-79
Description
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.
Affected products
- Splunk Enterprise: from 9.4.0 before 9.4.14; from 10.0.0 before 10.0.9; from 10.2.0 before 10.2.6; from 10.4.0 before 10.4.2 — fixed in 10.0.9, 10.2.6, 10.4.2, 9.4.14
How to fix
Upgrade to a fixed version: Splunk Enterprise 10.0.9, 10.2.6, 10.4.2, 9.4.14. Check the vendor advisory for mitigations.
References
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