Cross-site scripting (XSS) vulnerabilities in BigTree CMS through 4.2.18 allow remote authenticated users to inject arbitrary web script or HTML via the description parameter. This issue exists in core\admin\ajax\pages\save-revision.php and core\admin\modules\pages\revisions.php. Low-privileged (administrator) users can attack high-privileged (Developer) users.
Severity
CVSS 3.0
5.4 medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)