Vulnerability in OutSystems Service Center software

CERT Polska has received a report about vulnerability in OutSystems Service Center software and participated in coordination of its disclosure.

The vulnerabilityCVE-2026-40126: OutSystems Service Center is vulnerable to a DOM-based Cross-Site Scripting (XSS) attack that can be exploited by a low-privileged attacker via the upload of a file with a malicious filename containing JavaScript code. The vulnerability exists in all locations where a file can be attached and prepared for upload to the server.

This issue was fixed in OutSystems Service Center version 11.41.2

We thank Zbigniew Piotrak from AFINE Team for the responsible vulnerability report.