EUVD-2026-28517
GHSA-h5fh-7hwr-97mw
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
Lifecycle Timeline
4DescriptionNVD
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.
AnalysisAI
Kimai versions 2.32.0 through 2.55.x allow System-Admin users with invoice template upload permission to read arbitrary files from the PHP server via malicious PDF invoice templates. The vulnerability exploits mPDF's SetAssociatedFiles() function combined with unsanitized Twig template rendering to access any file readable by the PHP worker process and embed it within generated PDF invoices. …
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External POC / Exploit Code
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