{"id":"CVE-2026-84715","title":"FeatherPanel versions before 1.3.7.10 fail to validate permissions in the SubuserController updateSubuser handler, allowing authenticated subusers to modify their own permission records","summary":"FeatherPanel versions before 1.3.7.10 fail to validate permissions in the SubuserController updateSubuser handler, allowing authenticated subusers to modify their own permission records. A subuser with minimal permissions can send a craf…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-862"],"published":"2026-09-02","updated":"2026-09-10","sourceUpdated":"2026-09-10T15:53:23.707","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84715","references":[{"url":"https://github.com/MythicalLTD/FeatherPanel","label":"disclosure@vulncheck.com"},{"url":"https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Controllers/User/Server/SubuserController.php#L454","label":"disclosure@vulncheck.com"},{"url":"https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Helpers/ServerGateway.php","label":"disclosure@vulncheck.com"},{"url":"https://github.com/MythicalLTD/FeatherPanel/commit/06ef8dcac471201748516ca743694159cb846a9d","label":"disclosure@vulncheck.com"},{"url":"https://github.com/MythicalLTD/FeatherPanel/releases/tag/v1.3.7.10","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/featherpanel-before-1.3.7.10-privilege-escalation-via-subuser-permission-update","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"epss":0.00319,"epssPercentile":0.25112,"ingestedAt":"2026-09-10T16:57:28.701Z","vendor":"MythicalLTD","product":"FeatherPanel","affected":["FeatherPanel < 1.3.7.10"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-02T13:43:14.950648Z"},"slug":"CVE-2026-84715","body":"## Overview\n\nFeatherPanel versions before 1.3.7.10 fail to validate permissions in the SubuserController updateSubuser handler, allowing authenticated subusers to modify their own permission records. A subuser with minimal permissions can send a crafted request to grant themselves full server control, enabling unauthorized access to sensitive data, backups, and server configuration.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}