CVE-2026-4263: Hijiffy Chatbot

Medium severity, CVSS 6.9. EPSS: 0.4% chance of exploitation in the next 30 days.

Vulnerability of incorrect authorization in HiJiffy Chatbot allows an attacker to download private messages from other users via the parameter  'visitor' in '/api/v1/webchat/message'.

Affected products

• Hijiffy Hijiffy Chatbot: any version

Published 2026-03-26. Last modified 2026-06-17.