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.
References6
- github.com/MythicalLTD/FeatherPanel
- github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d23…
- github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d23…
- github.com/MythicalLTD/FeatherPanel/commit/06ef8dcac47120174851…
- github.com/MythicalLTD/FeatherPanel/releases/tag/v1.3.7.10
- www.vulncheck.com/advisories/featherpanel-before-1.3.7.10-privi…
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
8.7
HIGH
Score source: CNA
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 - EPSS — exploit probability
- 1% percentile: 47 · as of 8 November 2026
- CWE
- CWE-862
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