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CVE-2026-84715— FeatherPanel before 1.3.7.10 Privilege Escalation via Subuser Permission Update

Quick assessment

Affected
MythicalLTD FeatherPanel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MythicalSystems Studios FeatherPanel是MythicalSystems Studios组织的一个前端组件库。 MythicalSystems Studios FeatherPanel 1.3.7.10之前版本存在授权问题漏洞，该漏洞源于SubuserController updateSubuser处理程序未正确验证权限，允许已认证的子用户修改自身权限记录，最小权限的子用户可通过特制请求授予自身完全服务器控制权，导致未授权访问敏感数据、备份和服务器配置。

CVSS 8.8 · High EPSS 0.56% · P46

Affected Version Matrix 1

VendorProduct Version RangeStatus
MythicalLTD FeatherPanel < 1.3.7.10 affected
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I. Basic Information for CVE-2026-84715

Vulnerability Information
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Vulnerability Title
FeatherPanel before 1.3.7.10 Privilege Escalation via Subuser Permission Update
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
MythicalSystems Studios FeatherPanel 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MythicalSystems Studios FeatherPanel是MythicalSystems Studios组织的一个前端组件库。 MythicalSystems Studios FeatherPanel 1.3.7.10之前版本存在授权问题漏洞，该漏洞源于SubuserController updateSubuser处理程序未正确验证权限，允许已认证的子用户修改自身权限记录，最小权限的子用户可通过特制请求授予自身完全服务器控制权，导致未授权访问敏感数据、备份和服务器配置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MythicalLTD FeatherPanel 0 ~ 1.3.7.10 -

II. Public POCs for CVE-2026-84715

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III. Intelligence Information for CVE-2026-84715

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Vendor Advisories for CVE-2026-84715 (1)

Vendor Pages for CVE-2026-84715 (1)

Other References for CVE-2026-84715 (2)

IV. Related Vulnerabilities

Same vendor: MythicalLTD
Same weakness: CWE-862