CVE-2026-40486: Kimai is an open-source time tracking application

Q: How do I fix CVE-2026-40486?

kimai: upgrade to 2.53.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-40486 being exploited?

CVE-2026-40486 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-40486 affect?

CVE-2026-40486 affects kimai. Severity is medium (CVSS 4.3). Kimai is an open-source time tracking application. In versions 2.52.0 and below, the User Preferences API endpoint (PATCH /api/users/{id}/preferences) applies submitted preference values without checking the isEnabled() flag on preference o

Q: How urgent is CVE-2026-40486?

Priority 25/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2026-40486 is a medium-severity flaw (CVSS 4.3) affecting kimai. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kimai is an open-source time tracking application. In versions 2.52.0 and below, the User Preferences API endpoint (PATCH /api/users/{id}/preferences) applies submitted preference values without checking the isEnabled() flag on preference objects. Although the hourly_rate and internal_rate fields are correctly marked as disabled for users lacking the hourly-rate role permission, the API ignores this restriction and saves the values directly. Any

Why this priority

Public exploit reference

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 81%)
CISA exploited list	No
Weakness	CWE-915
Published	2026-04-17
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: kimai

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

Am I affected?

Timeline

2026-04-17 23:16 UTCPublished CVE record published
2026-06-17 10:45 UTCUpdated Record last modified

kimai kimai UPGRADE

Affected: < 2.53.0

Fixed in: 2.53.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.53.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kimai

Note

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

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-2026-40486?

kimai: upgrade to 2.53.0. Exact commands for each OS are on this page.

Is CVE-2026-40486 being exploited?

CVE-2026-40486 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-2026-40486 affect?

CVE-2026-40486 affects kimai. Severity is medium (CVSS 4.3). Kimai is an open-source time tracking application. In versions 2.52.0 and below, the User Preferences API endpoint (PATCH /api/users/{id}/preferences) applies submitted preference values without checking the isEnabled() flag on preference o

How urgent is CVE-2026-40486?

Priority 25/100. Public exploit reference

Related CVEs

CVE-2026-44298 MEDIUM 4.1 UPGRADE Kimai is an open-source time tracking application
CVE-2026-42267 MEDIUM 5.7 UPGRADE Kimai is an open-source time tracking application
CVE-2026-41498 LOW 3.3 UPGRADE Kimai is an open-source time tracking application
CVE-2026-40479 MEDIUM 5.4 UPGRADE Kimai is an open-source time tracking application

References

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