CVE-2026-41544Path Traversal leading to Arbitrary File Move, Docker Escape, and Host RCE in /calapi/renameUpload endpoint

Description

A path traversal vulnerability has been reported to affect QcalAgent. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: QcalAgent 1.1.10 and later

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://www.qnap.com/en/app-release-notes?keyword=QcalAgent&app=qcalendar&product-line=nas release-notes