CVE intelligence and bounded remediation

CVE-2021-24558 — 3.7Designs Project Status security vulnerability

Medium CVSS 5.4

The pspin_duplicate_post_save_as_new_post function of the Project Status WordPress plugin through 1.6 does not sanitise, validate or escape the post GET parameter passed to it before outputting it in an error message when the related post does not exist, leading to a reflected XSS issue

Severity
Medium
CVSS
5.4 (3.1)
Published
2021-08-23
CISA KEV
Not currently listed
Ecosystem
php/wordpress
Weaknesses
CWE-79

Affected products

  • 3.7designs / project_status

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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