DOM-based Cross-Site Scripting in OutSystems Service Center
Priority LOW 23CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00627 50th percentileScored 2026-11-07
Fix Fixed Service Center (OutSystems): 11.41.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OutSystems | Service Center | before 11.41.2 | 11.41.2 | Patch available | CNA |
- Service Center VendorOutSystems Affected before 11.41.2 Fixed in 11.41.2 Patch available CNA
Remediation
- Fix · CNA Service Center (OutSystems) Fixed in 11.41.2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-40126
- 2026-10-03 Alias added: GHSA-wpg4-f3mj-hxh3
- 2026-10-30 EPSS moved to the 50th–90th percentile
References
More OutSystems vulnerabilities
- TI-2022-23664 A DLL hijacking vulnerability has been discovered in OutSystems Service Studio 11… CVSS 3.1HIGH 7.8
- TI-2025-37969 Outsystems Platform Server 11.18.1.37828 allows attackers to cause a denial of service… CVSS 3.1HIGH 7.5
- TI-2021-10104 The ECT Provider component in OutSystems Platform Server 10 before 10.0.1104.0 and 11… CVSS 3.1HIGH 8.6
- TI-2020-17678 An issue was discovered in the Upload Widget in OutSystems Platform 10 before 10.0.1019.0. CVSS 3.1HIGH 7.2
- TI-2020-10701 A stored XSS vulnerability was discovered in the ECT Provider in OutSystems before… CVSS 3.1MEDIUM 6.1
- TI-2019-09159 OutSystems Platform 10 through 11 allows ImageResourceDetail.aspx CSRF for content… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-40126 · CVE Program
- CVE-2026-40126 · NVD
- FIRST EPSS
- GHSA-wpg4-f3mj-hxh3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences