Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Splunk | Splunk | >= 9.3.0, < 9.3.11 |
| Splunk | Splunk Cloud Platform | >= 9.3.2411, < 9.3.2411.127 |
Related Weaknesses (CWE)
References
- https://advisory.splunk.com/advisories/SVD-2026-0401Vendor Advisory
FAQ
What is CVE-2026-20202?
CVE-2026-20202 is a vulnerability with a CVSS score of 6.6 (MEDIUM). 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...
How severe is CVE-2026-20202?
CVE-2026-20202 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-20202?
Check the references section above for vendor advisories and patch information. Affected products include: Splunk Splunk, Splunk Splunk Cloud Platform.