# 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…

Source: https://junglewise.ai/threats/cve-2026-20202-in-splunk-enterprise-versions-below-10-2-2-10-0-5-9-4-10-and-9-3  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-15  
License: CC BY 4.0 with a link back

CVE-2026-20202 · Severity: medium · CVSS 6.6 · Published 2026-04-15

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.

Technologies: [Splunk](https://junglewise.ai/threats/technologies/splunk), [Splunk Cloud Platform](https://junglewise.ai/threats/technologies/cloud-platform). Vendors: [Splunk](https://junglewise.ai/threats/vendors/splunk).

## Quick answers

**Is CVE-2026-20202 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-20202 being exploited in the wild.

**How severe is CVE-2026-20202?** Medium severity, with a CVSS score of 6.6, published 15 April 2026.

**Which products and versions are affected?** Splunk, Splunk Cloud Platform. The advisory does not name versions.

**Is there a fix for CVE-2026-20202?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-20202?** Check whether you run Splunk or Splunk Cloud Platform. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Splunk
- Splunk Cloud Platform

## Related threats

- [Splunk Enterprise improper adherence to coding standards](https://junglewise.ai/threats/cve-2026-76285-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Splunk Enterprise improper neutralization](https://junglewise.ai/threats/cve-2026-76284-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Splunk Enterprise protection mechanism failure](https://junglewise.ai/threats/cve-2026-76283-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Splunk Enterprise improper control of resource through lifetime](https://junglewise.ai/threats/cve-2026-76282-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Splunk Enterprise improper access control](https://junglewise.ai/threats/cve-2026-76281-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)