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.
Problem types
The software does not properly handle when an input contains Unicode encoding.
Product status
10.0 (custom) before 10.0.5
9.4 (custom) before 9.4.10
9.3 (custom) before 9.3.11
10.3.2512 (custom) before 10.3.2512.6
10.2.2510 (custom) before 10.2.2510.10
10.1.2507 (custom) before 10.1.2507.20
10.0.2503 (custom) before 10.0.2503.13
9.3.2411 (custom) before 9.3.2411.127
Credits
Ryan Luke<br><br>Mahfujur Rahman (mahfujwhh)
References
advisory.splunk.com/advisories/SVD-2026-0401