CVE intelligence and bounded remediation

CVE-2021-24936 — Wp Extra File Types Project Wp Extra File Types security vulnerability

High CVSS 8

The WP Extra File Types WordPress plugin before 0.5.1 does not have CSRF check when saving its settings, nor sanitise and escape some of them, which could allow attackers to make a logged in admin change them and perform Cross-Site Scripting attacks

Severity
High
CVSS
8 (3.1)
Published
2022-01-24
CISA KEV
Not currently listed
Ecosystem
php/wordpress
Weaknesses
CWE-352

Affected products

  • wp_extra_file_types_project / wp_extra_file_types

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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