Vulnerability Report

CVE-2026-20202

Title: Improper Input Validation in Splunk Enterprise and Cloud Platform Leading to Account Inconsistencies

Input Validation Error

Proof Of Concept

No public PoC currently indexed for CVE-2026-20202.

CWE Category CWE-176
Published Date Apr 15, 2026
Modified Date Apr 17, 2026
Exploit Status Not Found
Score 6.6 CVSS v3.1
Exploit Probability (EPSS)
0.25%

Vulnerability Summary

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.

Impacted Vendors

S
splunk 2
J
jenkins 1

Reference Links

https://advisory.splunk.com/advisories/SVD-2026-0401
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.6
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-20202 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.