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CVE PROGRAM SOURCE RECORD6.8 Medium

CVE-2026-76252

Cross-Site Scripting (XSS) through Splunk Web Message Validation in Splunk Enterprise

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Splunk Splunk Enterprise

  • 10.4 to < 10.4.2affected
  • 10.2 to < 10.2.6affected
  • 10.0 to < 10.0.9affected
  • 9.4 to < 9.4.13affected

References