{"id":"CVE-2026-84715","summary":"FeatherPanel before 1.3.7.10 Privilege Escalation via Subuser Permission Update","details":"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 crafted request to grant themselves full server control, enabling unauthorized access to sensitive data, backups, and server configuration.","modified":"2026-09-12T03:30:16.237590481Z","published":"2026-09-02T01:18:16.328Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84715.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-862"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84715.json"},{"type":"ADVISORY","url":"https://github.com/MythicalLTD/FeatherPanel/releases/tag/v1.3.7.10"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84715"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/featherpanel-before-1.3.7.10-privilege-escalation-via-subuser-permission-update"},{"type":"FIX","url":"https://github.com/MythicalLTD/FeatherPanel/commit/06ef8dcac471201748516ca743694159cb846a9d"},{"type":"PACKAGE","url":"https://github.com/MythicalLTD/FeatherPanel"},{"type":"ARTICLE","url":"https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Controllers/User/Server/SubuserController.php#L454"},{"type":"ARTICLE","url":"https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Helpers/ServerGateway.php"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mythicalltd/featherpanel","events":[{"introduced":"0"},{"fixed":"5e57b96efb515944b9eb3aaa90761e7356079fdc"},{"fixed":"06ef8dcac471201748516ca743694159cb846a9d"}],"database_specific":{"source":["DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"1.3.7.10"}]}}],"versions":["v1.3.7.3","v1.3.7.2","v1.3.7.1","v1.3.7","v1.3.6.6","v1.3.6.5","v1.3.6.4","v1.3.6.3","v1.3.6.2","v1.3.6.1","v1.3.6","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.2","v1.1.1","v1.1.0-hotfix","v1.1.0","v1.0.6","v1.0.5","v1.0.4.1","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.0.9","v0.0.8","v0.0.7","v0.0.6","v0.0.5","v0.0.4","v0.0.3","v0.0.2","0.0.1-canary"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84715.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}