CVE-2026-55477

HIGH

Authenticated Arbitrary File Write via Database Import and Xray Log Path Manipulation

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.2
EPSS 0.0034
EPSS Percentile 26.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-73
Status published
Products (1)
MHSanaei/3x-ui < 3.3.1
Published Jun 25, 2026
Tracked Since Jun 25, 2026