Schema Scalpel <= 1.6.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Title in JSON-LD Schema
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| kevingillispie | Schema Scalpel | up to 1.6.1 | — | No fix listed | CNA |
- Schema Scalpel Vendorkevingillispie Affected up to 1.6.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-12118
- 2026-10-03 Alias added: GHSA-hr62-g3v7-mq7g
References
Other 4
- 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
Sources
- CVE-2025-12118 · CVE Program
- CVE-2025-12118 · NVD
- FIRST EPSS
- GHSA-hr62-g3v7-mq7g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences