CVE-2026-20202

published 2026-04-15

CVE-2026-20202: 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…

Priority P3 39 medium 6.6 CVSS 3.1

AV N AC H PR H UI N S U C H I H A H

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.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

14 ranges

Vendor	Product	Version range	Fixed in
splunk	splunk	>= 10.0.0 < 10.0.5	10.0.5
splunk	splunk	>= 10.2.0 < 10.2.2	10.2.2
splunk	splunk	>= 9.3.0 < 9.3.11	9.3.11
splunk	splunk	>= 9.4.0 < 9.4.10	9.4.10
splunk	splunk_cloud_platform	>= 10.0.2503 < 10.0.2503.13	10.0.2503.13
splunk	splunk_cloud_platform	>= 10.1.2507 < 10.1.2507.20	10.1.2507.20
splunk	splunk_cloud_platform	>= 10.2.2510 < 10.2.2510.10	10.2.2510.10
splunk	splunk_cloud_platform	>= 10.3.2512 < 10.3.2512.6	10.3.2512.6
splunk	splunk_cloud_platform	>= 10.4.2603 < Not Affected	Not Affected
splunk	splunk_cloud_platform	>= 9.3.2411 < 9.3.2411.127	9.3.2411.127
splunk	splunk_enterprise	>= 10.0 < 10.0.5	10.0.5
splunk	splunk_enterprise	>= 10.2 < 10.2.2	10.2.2
splunk	splunk_enterprise	>= 9.3 < 9.3.11	9.3.11
splunk	splunk_enterprise	>= 9.4 < 9.4.10	9.4.10

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CWE-176