CVE-2026-55477 | 3X-UI is a web control panel for managing Xray-core servers.… | CVSS 7.2 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.

Metadata

CVE ID: CVE-2026-55477
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-16 22:10 UTC
Published: 2026-06-25 15:00 UTC
Last updated: 2026-06-25 15:48 UTC
Primary CWE: CWE-73
CWE-73: External Control of File Name or Path
Vendor / Product: MHSanaei / 3x-ui
Sources: cve.org · NVD

Severity & Metrics

7.2 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
MHSanaei	3x-ui	—	< 3.3.1

Weakness (CWE)

CWE	Source	Description
CWE-73	cna	CWE-73: External Control of File Name or Path

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.2	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References (1)

https://github.com/MHSanaei/3x-ui/security/advisories/GHSA-jm48-m3rr-9hgg https://github.com/MHSanaei/3x-ui/security/advisories/GHSA-jm48-m3rr-9hgg