CVE-2026-76277

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.

• https://advisory.splunk.com/advisories/SVD-2026-1001

• UNSCOREDCVE-2023-5649
• MEDIUMCVE-2025-31980
• MEDIUMCVE-2025-32000
• CRITICALCVE-2025-71383
• HIGHCVE-2026-100113
• HIGHCVE-2026-100117
• HIGHCVE-2026-100119
• HIGHCVE-2026-100120

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