# Cross-site Scripting Vulnerability in File Station

CVE record · `CVE-2018-19942`

- **Identifiers:** `CVE-2018-19942`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** qnap
- **Weakness (CWE):** [CWE-79](https://cwe.mitre.org/data/definitions/79.html) · [CWE-80](https://cwe.mitre.org/data/definitions/80.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md)
- **Technologies:** [QNAP Systems Inc. QTS](https://agentprime.io/advisories/technology/qnap-systems-inc-qts.md) · [QNAP Systems Inc. QuTS hero](https://agentprime.io/advisories/technology/qnap-systems-inc-quts-hero.md) · [QNAP Systems Inc. QuTScloud](https://agentprime.io/advisories/technology/qnap-systems-inc-qutscloud.md)
- **Published:** 16 Apr 2021
- **Updated:** 16 Sept 2024
- **Reviewed by a person:** No

Published by the CVE Program (CNA: qnap) at 16 Apr 2021, 01:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: QNAP Systems Inc.. Product: QTS.
  - affected: `unspecified to before 4.5.2.1566 build 20210202` (custom)
  - affected: `unspecified to before 4.5.1.1456 build 20201015` (custom)
  - affected: `unspecified to before 4.3.6.1446 build 20200929` (custom)
  - affected: `unspecified to before 4.3.4.1463 build 20201006` (custom)
  - affected: `unspecified to before 4.3.3.1432 build 20201006` (custom)
  - affected: `unspecified to before 4.2.6 build 20210327` (custom)
- Vendor: QNAP Systems Inc.. Product: QuTS hero.
  - affected: `unspecified to before h4.5.1.1472 build 20201031` (custom)
- Vendor: QNAP Systems Inc.. Product: QuTScloud.
  - affected: `unspecified to before c4.5.4.1601 build 20210309` (custom)
  - affected: `unspecified to before c4.5.3.1454 build 20201013` (custom)

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0077, the 55th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 16 Apr 2021. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2018-19942](https://www.cve.org/CVERecord?id=CVE-2018-19942)
- [NVD: CVE-2018-19942](https://nvd.nist.gov/vuln/detail/CVE-2018-19942)

### References from the CNA

- <https://www.qnap.com/zh-tw/security-advisory/qsa-21-04>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2018-19942>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2018-19942/>. Everything for agents: <https://agentprime.io/llms.txt>.