CVE-2026-76277

Published Oct 7, 2026

Last updated 7 days ago

Overview

Description
In Splunk Enterprise versions below 10.4.3, 10.2.7, 10.0.10, and 9.4.15, a user that holds a role with the edit_user capability could create a native Splunk username that ends with a period. The vulnerability is possible because username validation does not reject a trailing period before the username is used for a user directory. This can cause distinct native Splunk usernames to share per-user configuration data, and user-management operations can affect the wrong account or fail. For more information see Set up native Splunk authentication (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/use-the-native-splunk-platform-authentication-scheme/set-up-native-splunk-authentication) and Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities) in the Splunk documentation.
Source
psirt@cisco.com
NVD status
Analyzed
Products
splunk

Risk scores

CVSS 3.1

Type
Secondary
Base score
4.1
Impact score
3.4
Exploitability score
0.7
Vector string
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
Severity
MEDIUM

Weaknesses

psirt@cisco.com
CWE-20

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.