CVE-2026-20202: Improper Input Validation during User Account Creation in Splunk Enterprise
Splunk · Splunk Enterprise
Vendor fix available · Affected: Splunk Enterprise · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 16% of scored CVEs
DescriptionCVE.org
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.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Splunk · Splunk Enterprisefrom 10.2 before 10.2.2; from 10.0 before 10.0.5; from 9.4 before 9.4.10; from 9.3 before 9.3.11
- Splunk · Splunk Cloud Platformfrom 10.4.2603 before Not Affected; from 10.3.2512 before 10.3.2512.6; from 10.2.2510 before 10.2.2510.10; from 10.1.2507 before 10.1.2507.20; from 10.0.2503 before 10.0.2503.13; from 9.3.2411 before 9.3.2411.127
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Splunk
- Published
- April 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-20202 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.