CVE-2026-41544

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

State: Published
Severity: 8.7 High
Published: Oct 15, 2026
Updated: Oct 19, 2026
Reserved: Apr 21, 2026

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

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	qnap

Weaknesses

CWE-22

Affected Products

Product	Versions
QcalAgentQNAP Systems Inc.	1.1.x to before 1.1.10Affected

References

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

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