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, 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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.6
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS probability
- 0.25%
- CWE
- CWE-176
- Published
- 2026-04-15
- Last modified
- 2026-04-16
Affected products
- Splunk Splunk Enterprise
- Splunk Splunk Enterprise
- Splunk Splunk Enterprise
- Splunk Splunk Enterprise
- Splunk Splunk Cloud Platform
- Splunk Splunk Cloud Platform
- Splunk Splunk Cloud Platform
- Splunk Splunk Cloud Platform
Weakness type
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