CVE-2026-76252: In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.13, an unauthenticated user who tricks another user into visiting a malicious web page…

PriorityP431medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EPSS

0.18%

7.9th percentile

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.13, an unauthenticated user who tricks another user into visiting a malicious web page could run unauthorized JavaScript in that user's browser. This could allow for unauthorized access to all relevant data available to that user and actions that affect system integrity. The Cross-Site Scripting (XSS) is possible because Splunk Web does not validate the origin and source of messages received by a page message handler. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The unauthenticated user should not be able to exploit the vulnerability at will.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
splunk	splunk	>= 10.0.0 < 10.0.9	10.0.9
splunk	splunk	>= 10.2.0 < 10.2.6	10.2.6
splunk	splunk	>= 10.4.0 < 10.4.2	10.4.2
splunk	splunk	>= 9.4.0 < 9.4.13	9.4.13
splunk	splunk_enterprise	>= 10.0 < 10.0.9	10.0.9
splunk	splunk_enterprise	>= 10.2 < 10.2.6	10.2.6
splunk	splunk_enterprise	>= 10.4 < 10.4.2	10.4.2
splunk	splunk_enterprise	>= 9.4 < 9.4.13	9.4.13

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