What is CVE-2024-31398?

CVE-2024-31398 is a medium-severity vulnerability in Cybozu Garoon. CVSS score: 4.3/10. Published 2024-06-11.

How severe is CVE-2024-31398?

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

Vulnerability in Cybozu Garoon

CVE-2024-31398

Insertion of sensitive information into sent data issue exists in Cybozu Garoon 5.0.0 to 5.15.2. If this vulnerability is exploited, a user who can log in to the product may obtain information on the list of users.

Published 2024-06-11 · 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:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Cybozu Garoon
Cybozu, Inc. Cybozu Garoon — versions 5.0.0 to 5.15.2

References

cs.cybozu.co.jp/2024/007901.html (Vendor Advisory)
jvn.jp/en/jp/JVN28869536/ (Third Party Advisory)

Frequently asked questions

What is CVE-2024-31398?: CVE-2024-31398 is a medium-severity vulnerability in Cybozu Garoon. CVSS score: 4.3/10. Published 2024-06-11.
How severe is CVE-2024-31398?: Medium severity. CVSS v3 base score is 4.3 out of 10.