CVE-2023-39736: Linecorp Fukunaga Memberscard

High severity, CVSS 8.2. EPSS: 0.6% chance of exploitation in the next 30 days.

The leakage of the client secret in Fukunaga_memberscard Line 13.6.1 allows attackers to obtain the channel access token and send crafted broadcast messages.

Affected products

• Linecorp Fukunaga Memberscard: version 13.6.1 only

Published 2023-10-25. Last modified 2026-06-17.