CVE-2021-20764: Cybozu Garoon

Medium severity, CVSS 5.3. EPSS: 1% chance of exploitation in the next 30 days.

Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.

Affected products

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

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