XSS exists in FUEL CMS 1.4.3 via the Header or Body in the Layout Variables during new-page creation, as demonstrated by the pages/edit/1?lang=english URI.
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
0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-31)