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.

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Fixes

Solution

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Workaround

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History

Wed, 02 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Mythicalltd
Mythicalltd featherpanel
Vendors & Products Mythicalltd
Mythicalltd featherpanel

Wed, 02 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 02 Sep 2026 01:45:00 +0000

Type Values Removed Values Added
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.
Title FeatherPanel before 1.3.7.10 Privilege Escalation via Subuser Permission Update
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-02T16:01:20.955Z

Reserved: 2026-09-02T01:03:07.317Z

Link: CVE-2026-84715

cve-icon Vulnrichment

Updated: 2026-09-02T13:43:16.390Z

cve-icon NVD

Status : Received

Published: 2026-09-02T02:17:20.760

Modified: 2026-09-02T16:17:32.813

Link: CVE-2026-84715

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T16:42:34Z

Weaknesses