Is CVE-2026-44298 actively exploited?

No active exploitation of CVE-2026-44298 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44298 be exploited remotely?

Yes. CVE-2026-44298 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44298?

CVE-2026-44298 has a CVSS score of 4.9 (MEDIUM).

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MEDIUM

CVE-2026-44298

CWE-22Published: May 8, 2026· Updated: May 8, 2026

4.9

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:17.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-44298 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 4.9.