CVE-2026-81784: Marcin Wise Chat

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Deserialization of Untrusted Data vulnerability in Marcin Wise Chat wise-chat allows Object Injection.This issue affects Wise Chat: from n/a through 3.4.2.

Affected products

• Marcin Wise Chat: up to and including 3.4.2

Published 2026-09-10. Last modified 2026-10-06.