CVE intelligence and bounded remediation

CVE-2021-31830 — Mcafee Database Security security vulnerability

Medium CVSS 5.9

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows an administrator to embed JavaScript code when configuring the name of a database to be monitored. This would be triggered when any authorized user logs into the DBSec interface and opens the properties configuration page for this database.

Severity
Medium
CVSS
5.9 (3.1)
Published
2021-06-03
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-79

Affected products

  • mcafee / database_security

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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