admin/index.php in Monstra CMS 3.0.4 allows XSS via the page_meta_title parameter in an edit_page&name=error404 action, a different vulnerability than CVE-2018-10121.
Severity
CVSS 3.0
4.8 medium
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)