CVE-2026-40126

MEDIUM CVSS 4.0: 4.8 EPSS 0.30%
Updated Aug 28, 2026
OutSystems
Parameter Value
CVSS 4.8 (MEDIUM)
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor OutSystems
Public PoC No

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

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Active
User action required

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0