CVE-2021-20758: Cybozu Garoon

High severity, CVSS 8.0. EPSS: 0.5% chance of exploitation in the next 30 days.

Cross-site request forgery (CSRF) vulnerability in Message of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote authenticated attacker to hijack the authentication of administrators and perform an arbitrary operation via unspecified vectors.

Affected products

• Cybozu Garoon: from 4.0.0, up to and including 5.0.2

Published 2021-08-18. Last modified 2026-06-17.