CVE intelligence and bounded remediation

CVE-2023-23372 — A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions

Medium CVSS 6.5

A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to inject malicious code via a network. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2425 build 20230609 and later QTS 5.1.0.2444 build 20230629 and later QTS 4.5.4.2467 build 20230718 and later QuTS hero h5.1.0.2424 build 20230609 and later QuTS hero h5.0.1.2515 build 20230907 and later QuTS hero h4.5.4.2476 build 20230728 and later

Severity
Medium
CVSS
6.5 (3.1)
Published
2023-12-08
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-79

Affected products

  • qnap / qts / 5.1.0.2348
  • qnap / qts / 5.1.0.2399
  • qnap / qts / 5.1.0.2418
  • qnap / qts / 5.0.1.2034
  • qnap / qts / 5.0.1.2079
  • qnap / qts / 5.0.1.2131

Showing 6 representative product identities from 47 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cross-site scripting and unsafe browser output

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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