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Vulnerability in OutSystems Service Center software
17 August 2026 | CERT Polska | #vulnerability, #warning, #cve
CVE ID CVE-2026-40126
Publication date 17 August 2026
Vendor OutSystems
Product Service Center
Vulnerable versions All before 11.41.2
Vulnerability type (CWE) Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') (CWE-79)
Report source Report to CERT Polska

Description

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

The vulnerability CVE-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

Credits

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

More about the coordinated vulnerability disclosure process at CERT Polska can be found at https://cert.pl/en/cvd/.