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CVE PROGRAM SOURCE RECORD6.6 Medium

CVE-2026-20202

Improper Input Validation during User Account Creation in Splunk Enterprise

Description

In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.20, 10.0.2503.13, and 9.3.2411.127, a user who holds a role that contains the high-privilege capability `edit_user`could create a specially crafted username that includes a null byte or a non-UTF-8 percent-encoded byte due to improper input validation.<br><br>This could lead to inconsistent conversion of usernames into a proper format for storage and account management inconsistencies, such as being unable to edit or delete affected users.

Affected products

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

Splunk Splunk Enterprise

  • 10.2 to < 10.2.2affected
  • 10.0 to < 10.0.5affected
  • 9.4 to < 9.4.10affected
  • 9.3 to < 9.3.11affected

Splunk Splunk Cloud Platform

  • 10.4.2603 to < Not Affectedaffected
  • 10.3.2512 to < 10.3.2512.6affected
  • 10.2.2510 to < 10.2.2510.10affected
  • 10.1.2507 to < 10.1.2507.20affected
  • 10.0.2503 to < 10.0.2503.13affected
  • 9.3.2411 to < 9.3.2411.127affected

References