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OpenAdvisories
Medium · 6.6 CVE-2026-20202 EUVD-2026-22930GHSA-p3vg-7hj9-6f24

Improper Input Validation during User Account Creation in Splunk Enterprise

Published Apr 15, 2026 · Updated Apr 16, 2026 · Assigned by cisco

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

VendorProductAffectedFixed
Splunk Splunk Enterprise 10.2 – < 10.2.2, 10.0 – < 10.0.5, 9.4 – < 9.4.10, 9.3 – < 9.3.11 10.2.2
Splunk Splunk Cloud Platform 10.4.2603 – < Not Affected, 10.3.2512 – < 10.3.2512.6, 10.2.2510 – < 10.2.2510.10, 10.1.2507 – < 10.1.2507.20, 10.0.2503 – < 10.0.2503.13, 9.3.2411 – < 9.3.2411.127 Not Affected

Advisories 1

References