Vulnerability · Published May 8, 2026 · Assigned by GitHub_M

CVE-2026-44298Kimai: Arbitrary file read in invoice PDF renderer (admin)

Medium 4.1

In plain English

A medium-severity path traversal in kimai from kimai. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.1Medium

Exploit odds (30 days)0.3%top 79.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	kimai/kimai	2.56	GHSA-h5fh-7hwr-97mw

Affected products (as reported)

Vendor	Product	Versions
kimai	kimai	>= 2.32.0, < 2.56.0

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

References

https://github.com/kimai/kimai/security/advisories/GHSA-h5fh-7hwr-97mw x_refsource_CONFIRM
https://github.com/kimai/kimai/releases/tag/2.56.0 x_refsource_MISC