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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.

FeatherPanel 1.3.7.10 之前版本在 的 处理函数中未能正确验证权限，导致已认证的子用户可以修改自己的权限记录。拥有最小权限的子用户可以发送精心构造的请求来为自己授予完整的服务器控制权，从而实现对敏感数据、备份及服务器配置的不authorized 访问。

CVSS 8.8 · High
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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

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 weakness: CWE-862

V. Comments for CVE-2026-84715

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