Description
The Schema Scalpel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the post title in all versions up to, and including, 1.6.1 due to insufficient input sanitization and output escaping when outputting user-supplied data into JSON-LD schema markup. 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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| kevingillispie | Schema Scalpel | ≤ 1.6.1 | — |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9289e93c-22ac-4f3f-8a8a-591d9a598713?source=cve
- https://plugins.trac.wordpress.org/browser/schema-scalpel/tags/1.6.1/public/class-schema-scalpel-public.php#L146
- https://plugins.trac.wordpress.org/browser/schema-scalpel/tags/1.6.1/public/class-schema-scalpel-public.php#L183
- https://github.com/kevingillispie/Schema-Scalpel/commit/0a24430ed4f99a3998d032e755cd97a57d4fae29