What is CVE-2020-5565?

CVE-2020-5565 is a medium-severity vulnerability in Cybozu Garoon, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2020-04-28.

How severe is CVE-2020-5565?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Improper input validation in Cybozu Garoon

CVE-2020-5565

Improper input validation vulnerability in Cybozu Garoon 4.0.0 to 4.10.3 allows a remote authenticated attacker to alter the application's data via the applications 'Workflow' and 'MultiReport'.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2020-04-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Cybozu Garoon
Cybozu, Inc. Cybozu Garoon — versions 4.0.0 to 4.10.3

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

jvn.jp/en/jp/JVN35649781/index.html (Third Party Advisory)
kb.cybozu.support/article/36119/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-5565?: CVE-2020-5565 is a medium-severity vulnerability in Cybozu Garoon, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2020-04-28.
How severe is CVE-2020-5565?: Medium severity. CVSS v3 base score is 4.3 out of 10.