What is CVE-2026-55477?

CVE-2026-55477 is a high-severity vulnerability in Mhsanaei 3x-ui, classified under External Control of File Name or Path. CVSS score: 7.2/10. Published 2026-06-25.

How severe is CVE-2026-55477?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Mhsanaei 3x-ui

CVE-2026-55477

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 stor…

EPSS: 0.003 (26.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mhsanaei 3x-ui — versions < 3.3.1

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-55477?: CVE-2026-55477 is a high-severity vulnerability in Mhsanaei 3x-ui, classified under External Control of File Name or Path. CVSS score: 7.2/10. Published 2026-06-25.
How severe is CVE-2026-55477?: High severity. CVSS v3 base score is 7.2 out of 10.