CVE-2021-20771: Cybozu Garoon

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

Cross-site scripting vulnerability in some functions of E-Mail of Cybozu Garoon 4.0.0 to 5.5.0 allows a remote attacker to inject an arbitrary script via unspecified vectors.

Affected products

• Cybozu Garoon: from 4.0.0, up to and including 5.5.0

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