CVE-2025-53858: Neojapan Inc Chatluck

Medium severity, CVSS 4.8. EPSS: 0.2% chance of exploitation in the next 30 days.

ChatLuck contains a cross-site scripting vulnerability in Chat Rooms. If exploited, an arbitrary script may be executed on the web browser of the user who is accessing the product.

Affected products

• Neojapan Inc Chatluck: up to and including V6.6 R2.0

Published 2025-10-16. Last modified 2026-10-08.