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FeatherPanel before 1.3.7.10 Privilege Escalation via Subuser Permission Update

CVSS 4.0 8.7 HIGHCVSS 3.1 8.8 HIGHCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-84715

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-84715

Published

FeatherPanel

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "MythicalLTD",
                    "product": "FeatherPanel",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "1.3.7.10",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 12 Nov 13:19 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current