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.

CVSS v3 6.6 MEDIUM

6.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.7 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://advisory.splunk.com/advisories/SVD-2026-0401	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:splunk:splunk:::::enterprise:::*
	cpe:2.3:a:splunk:splunk:::::enterprise:::*
	cpe:2.3:a:splunk:splunk:::::enterprise:::*
	cpe:2.3:a:splunk:splunk:::::enterprise:::*

Configuration 2 (hide)

OR	cpe:2.3:a:splunk:splunk_cloud_platform::::::::
	cpe:2.3:a:splunk:splunk_cloud_platform::::::::
	cpe:2.3:a:splunk:splunk_cloud_platform::::::::
	cpe:2.3:a:splunk:splunk_cloud_platform::::::::
	cpe:2.3:a:splunk:splunk_cloud_platform::::::::

History

17 Apr 2026, 19:10

Type	Values Removed	Values Added
References	~~() https://advisory.splunk.com/advisories/SVD-2026-0401 -~~	() https://advisory.splunk.com/advisories/SVD-2026-0401 - Vendor Advisory
CPE		cpe:2.3:a:splunk:splunk:::::enterprise:::* cpe:2.3:a:splunk:splunk_cloud_platform::::::::
First Time		Splunk splunk Splunk Splunk splunk Cloud Platform

15 Apr 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-15 16:16

Updated : 2026-04-17 19:10

NVD link : CVE-2026-20202

Mitre link : CVE-2026-20202

CVE.ORG link : CVE-2026-20202

JSON object : View

Products Affected

splunk

splunk_cloud_platform
splunk

CWE

CWE-176

Improper Handling of Unicode Encoding

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