CVE intelligence and bounded remediation

CVE-2025-4951 — Rapid7 Appspider Pro security vulnerability

Medium CVSS 4.6

Editions of Rapid7 AppSpider Pro before version 7.5.018 is vulnerable to a stored cross-site scripting vulnerability in the "ScanName" field. Despite the application preventing the inclusion of special characters within the "ScanName" field, this could be bypassed by modifying the configuration file directly. This is fixed as of version 7.5.018

Severity
Medium
CVSS
4.6 (3.1)
Published
2025-05-20
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • rapid7 / appspider_pro

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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