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CVE-2026-20202

Improper Input Validation during User Account Creation in Splunk Enterprise

Published: Apr 15, 2026Updated: Apr 17, 2026 Sources: CVE List NVDCWE-176
6.6MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 84.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-176

Affected Products

Splunk
commercial·USaka splunk enterprise, splunk cloud platform
Splunk Enterprise
Security Products
Splunk Cloud Platform
Security Products
splunk
Security Products
and 1 more affected products View all →

Exploitability

Official Patch Available
Scannable·OpenVAS
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References

https://advisory.splunk.com/advisories/SVD-2026-0401
advisory.splunk.com
News mentions
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