How severe is CVE-2026-44298?

CVE-2026-44298 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-44298 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44298?

CVE-2026-44298 affects Kimai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44298?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44298 have an EU (EUVD) identifier?

Yes. CVE-2026-44298 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28517.

When was CVE-2026-44298 published?

CVE-2026-44298 was published on 2026-05-08 and last updated on 2026-06-17.

CVE-2026-44298

CVE-2026-44298 is a medium-severity vulnerability in Kimai with a CVSS 3.x base score of 4.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28517
Weakness: CWE-22
Affected product: Kimai
Published: 2026-05-08
Last modified: 2026-06-17

Description

Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin (ROLE_SYSTE_ADMIN) and the permission upload_invoice_template can upload PDF invoice templates, which can call pdfContext.setOption('associated_files', ...) inside the sandboxed Twig render. This is forwarded to mPDF's SetAssociatedFiles(), whose writer calls file_get_contents($entry['path']) during PDF output and embeds the bytes as a FlateDecode stream in the PDF. Any file readable by the PHP worker is returned to the attacker inside the rendered invoice. This issue has been patched in version 2.56.0.

Frequently asked questions

What is CVE-2026-44298?: Kimai is an open-source time tracking application. From version 2.32.0 to before version 2.56.0, users with the role System-Admin (ROLE_SYSTE_ADMIN) and the permission upload_invoice_template can upload PDF invoice templates, which can call pdfContext.setOption('associated_files', ...) inside the sandboxed Twig render. This is forwarded to mPDF's SetAssociatedFiles(), whose writer calls file_get_contents($entry['path']) during PDF output and embeds the bytes as a FlateDecode stream in the PDF. Any file readable by the PHP worker is returned to the attacker inside the rendered invoice. This issue has been patched in version 2.56.0.
How severe is CVE-2026-44298?: CVE-2026-44298 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-44298 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44298?: CVE-2026-44298 affects Kimai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44298?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44298 have an EU (EUVD) identifier?: Yes. CVE-2026-44298 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28517.
When was CVE-2026-44298 published?: CVE-2026-44298 was published on 2026-05-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kimai:kimai:*:*:*:*:*:*:*:*

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