GXCMS V1.5 has a file upload vulnerability in the background. The vulnerability is the template management page. You can edit any template content and then rename to PHP suffix file, after calling PHP file can control the server.
Severity
CVSS 3.1
7.2 high
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)