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CVE-2026-20258

Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 10.2.4, 10.0.7, 9.4.12, 9.3.13, 10.3.2512.11, and 3 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.11, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could store a malicious script in a classic dashboard HTML panel, causing unauthorized JavaScript code to execute in the browser of another user. The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Splunk Splunk Enterprise

    From 10.2 · fixed in 10.2.4; From 10.0 · fixed in 10.0.7; From 9.4 · fixed in 9.4.12; From 9.3 · fixed in 9.3.13

  • Splunk Splunk Cloud Platform

    From 10.3.2512 · fixed in 10.3.2512.11; From 10.2.2510 · fixed in 10.2.2510.15; From 10.1.2507 · fixed in 10.1.2507.23; From 9.3.2411 · fixed in 9.3.2411.132

References 1

advisory.splunk.com