CVE-2026-41498: kimai Auth Bypass — Exploit & Fix

Description

Kimai is an open-source time tracking application. Prior to version 2.54.0, the Team API endpoints use #[IsGranted('edit_team')] instead of #[IsGranted('edit', 'team')], causing Symfony TeamVoter to abstain from voting. This removes entity-level ownership checks on team operations, allowing any user with the edit_team permission to modify any team, not just teams they are authorized to manage. This issue has been patched in version 2.54.0.

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CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
kimai	kimai	< 2.54.0

References

Advisories & Patches

https://github.com/kimai/kimai/security/advisories/GHSA-jv9x-w4gm-hwcm https://github.com/kimai/kimai/security/advisories/GHSA-jv9x-w4gm-hwcm

Exploits

https://github.com/kimai/kimai/security/advisories/GHSA-jv9x-w4gm-hwcm https://github.com/kimai/kimai/security/advisories/GHSA-jv9x-w4gm-hwcm

Other References

https://github.com/kimai/kimai/releases/tag/2.54.0

Frequently Asked Questions

What is CVE-2026-41498? +

Kimai is an open-source time tracking application. Prior to version 2.54.0, the Team API endpoints use #[IsGranted('edit_team')] instead of #[IsGranted('edit', 'team')], causing Symfony TeamVoter to abstain from voting. This removes entity-level ownership checks on team operations, allowing any user with the edit_team permission to modify any team, not just teams they are authorized to manage. This issue has been patched in version 2.54.0. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2026-41498? +

CVE-2026-41498 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41498? +

CVE-2026-41498 affects products from kimai, specifically: kimai. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41498? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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