{
"id": "GHSA-2cvx-7j4v-8m5g",
"aliases": [
"CVE-2026-84715"
],
"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.",
"affected": [],
"modified": "2026-09-02T03:31:13Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"published": "2026-09-02T03:31:13Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84715",
"type": "ADVISORY"
},
{
"url": "https://github.com/MythicalLTD/FeatherPanel/commit/06ef8dcac471201748516ca743694159cb846a9d",
"type": "WEB"
},
{
"url": "https://github.com/MythicalLTD/FeatherPanel",
"type": "WEB"
},
{
"url": "https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Controllers/User/Server/SubuserController.php#L454",
"type": "WEB"
},
{
"url": "https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Helpers/ServerGateway.php",
"type": "WEB"
},
{
"url": "https://github.com/MythicalLTD/FeatherPanel/releases/tag/v1.3.7.10",
"type": "WEB"
},
{
"url": "https://www.vulncheck.com/advisories/featherpanel-before-1.3.7.10-privilege-escalation-via-subuser-permission-update",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-862"
],
"severity": "HIGH",
"github_reviewed": false,
"nvd_published_at": "2026-09-02T02:17:20Z",
"github_reviewed_at": null
}
}