CVE intelligence and bounded remediation

CVE-2015-20119 — Nextclickventures Realtyscript security vulnerability

Medium CVSS 6.4

Next Click Ventures RealtyScript 4.0.2 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious HTML and iframe elements through the text parameter in the pages.php admin interface. Attackers can submit POST requests to the add page action with crafted iframe payloads in the text parameter to store malicious content that executes in the browsers of users viewing the affected pages.

Severity
Medium
CVSS
6.4 (3.1)
Published
2026-03-16
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • nextclickventures / realtyscript / 4.0.2

Matched remediation archetype

Cross-site scripting and unsafe browser output

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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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