packages/core/contact.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?p=core/contact request, aka Open Bug Bounty ID OBB-278503.
Severity
CVSS 3.0
6.1 medium
CVSS:3.0/AV:N/AC:L/PR:N/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)