CVE intelligence and bounded remediation

CVE-2022-50787 — Sound4 First Firmware security vulnerability

High CVSS 7.2

SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x contains an unauthenticated stored cross-site scripting vulnerability in the username parameter that allows attackers to inject malicious scripts. Attackers can exploit the unvalidated username input to execute arbitrary HTML and JavaScript code in victim browser sessions without authentication.

Severity
High
CVSS
7.2 (3.1)
Published
2025-12-30
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-79

Affected products

  • sound4 / first_firmware / 2.15
  • sound4 / first_firmware / 1.69
  • sound4 / impact_eco_firmware / 1.16
  • sound4 / pulse_eco_firmware / 1.16
  • sound4 / big_voice4_firmware / 1.2
  • sound4 / big_voice2_firmware / 1.30

Showing 6 representative product identities from 12 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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