CVE-2024-31398: Insertion of sensitive information into sent data issue exists in Cybozu Garoon 5.0.0 to 5.15.2

Routine

MEDIUM 4.3UPGRADE

CVE-2024-31398 is a medium-severity flaw (CVSS 4.3) affecting garoon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Published	2024-06-11
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: cybozu

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-06-11 06:15 UTCPublished CVE record published
2026-06-17 07:28 UTCUpdated Record last modified

cybozu garoon UPGRADE

Affected: >= 5.0.0 and <= 5.15.2

Fixed in: newer than 5.15.2

Safe to downgrade to: a release before 5.0.0

1. Check installed version

apt-cache policy garoon || rpm -q garoon || garoon --version

2. UPGRADE to newer than 5.15.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade garoon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade garoon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.0.0 (Debian / Ubuntu)

apt-cache madison garoon sudo apt install garoon=<VERSION_BEFORE_5.0.0> sudo apt-mark hold garoon

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list garoon sudo dnf downgrade garoon-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add garoon

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-31398?

garoon: upgrade to newer than 5.15.2. Exact commands for each OS are on this page.

Is CVE-2024-31398 being exploited?

CVE-2024-31398 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-31398 affect?

CVE-2024-31398 affects garoon. Severity is medium (CVSS 4.3). 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.

How urgent is CVE-2024-31398?

Priority 21/100. No elevated risk signals yet.

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References

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