What’s Vulnerable › Vulnerabilities

CVE-2025-12118: Schema Scalpel <= 1.6.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Title in JSON-LD Schema

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-01 · updated 2026-10-18
• Weakness: CWE-79

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

• kevingillispie Schema Scalpel: through 1.6.1

References

• https://github.com/kevingillispie/Schema-Scalpel/commit/0a24430ed4f99a3998d032e755cd97a57d4fae29
• 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://www.wordfence.com/threat-intel/vulnerabilities/id/9289e93c-22ac-4f3f-8a8a-591d9a598713?source=cve

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