{"id":"CVE-2026-76277","title":"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","summary":"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…","severity":"medium","cvss":4.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-20"],"vendor":"Splunk","product":"Splunk Enterprise","affected":["enterprise >= 10.4 < 10.4.3","enterprise >= 10.2 < 10.2.7","enterprise >= 10.0 < 10.0.10","enterprise >= 9.4 < 9.4.15"],"published":"2026-10-07","updated":"2026-10-07","sourceUpdated":"2026-10-07T21:17:18.900","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-76277","references":[{"url":"https://advisory.splunk.com/advisories/SVD-2026-1001","label":"psirt@cisco.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-07T21:54:15.096Z","slug":"CVE-2026-76277","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":22.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}