CVE intelligence and bounded remediation

CVE-2021-24529 — Awplife Grid Gallery security vulnerability

Medium CVSS 5.4

The Grid Gallery – Photo Image Grid Gallery WordPress plugin before 1.2.5 does not properly sanitize the title field for image galleries when adding them via the admin dashboard, resulting in an authenticated Stored Cross-Site Scripting vulnerability.

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

Affected products

  • awplife / grid_gallery

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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