SchemaEngine AI – AI Schema Markup, Reviews & Rich Snippets for SEO <= 3.1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via JSON-LD Structured Data
- ID
- WPSEC-2026-2285
- Plugin
- Review Schema – Review & Structure Data Schema Plugin (review-schema)
- Affected
- all versions before 3.1.4
- Remediation
- Update to 3.1.4 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-11-03
- Attack surface
- SchemaEngine AI – AI Schema Markup, Reviews & Rich Snippets for SEO on WPSec AttackSurface
- Fix released
- Published
Description
The review-schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the JSON-LD structured data output in all versions up to, and including, 3.1.3. This is due to the schema graph being printed inside a script element with wp_json_encode() using JSON_UNESCAPED_SLASHES and no escaping of HTML tags, while values such as the WebPage description are HTML-entity-decoded from the post excerpt or content, so an entity-encoded '</script>' sequence in post content ends the script element. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
References
- https://wpsec.com/vuln/WPSEC-2026-2285/
- https://plugins.svn.wordpress.org/review-schema/tags/3.1.4/
- https://wordpress.org/plugins/review-schema/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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