Cross-site scripting in Splunk Enterprise - CVE-2026-76318
Published: August 20, 2026
Vulnerability identifier: #VU144451
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-76318
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute unauthorized JavaScript in another user's browser.
The vulnerability exists due to cross-site scripting in Splunk Web alert trigger condition markup when rendering alert threshold values. A remote user can store a malicious script in an alert trigger condition field and trick another user into opening a crafted link to execute it.
Exploitation requires the schedule_search capability.
Affected software
Splunk Enterprise
How to mitigate CVE-2026-76318
Install security update from vendor's website.
Splunk Enterprise - addressed in versions 9.4.14, 10.0.9, 10.2.6, 10.4.2