CVE-2026-55477
High
Description
3X-UI is a web control panel for managing Xray-core servers. Prior to 3.3.1, an authenticated administrator can abuse the database import functionality to achieve arbitrary file write on the host by modifying Xray configuration values stored in the database. This can be leveraged to obtain code execution and persistent access as the user running Xray (including root when Xray is running as root). This vulnerability is fixed in 3.3.1.
SeverityHigh
CVSS7.2
Exploit probability—
ProductGithub.com/mhsanaei/3x-ui/v3
PublishedJun 25, 2026
First seenJun 25, 2026
Weakness typeCWE-73CWE-73
How to fix
Update
- github.com/mhsanaei/3x-ui/v33.3.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/mhsanaei/3x-ui/v3Go | v < 3.3.1 | 3.3.1 |
| github.com/mhsanaei/3x-ui/v2Go | v ≤ 2.9.4, No range specified | — |
| github.com/mhsanaei/3x-uiGo | No range specified | — |
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