WP SEO Structured Data Schema <= 2.7.11 - Authenticated (Contributor+) Stored Cross-Site Scripting via Plugin Settings
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 WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘Price Range’ parameter in all versions up to, and including, 2.7.11 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts that will execute whenever an administrator accesses the plugin settings 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 |
|---|---|---|---|---|---|
| kcseopro | WP SEO Structured Data Schema | up to 2.7.11 | — | No fix listed | CNA |
- WP SEO Structured Data Schema Vendorkcseopro Affected up to 2.7.11 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wpsemplugins:wp_seo_structured_data_schema:*:*:*:*:free:wordpress:*:* | before 2.8.0 | Vulnerable | Wpsemplugins |
- cpe:2.3:a:wpsemplugins:wp_seo_structured_data_schema:*:*:*:*:free:wordpress:*:* Versions before 2.8.0 Vulnerable ·Wpsemplugins
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-4127
- 2026-10-03 Alias added: GHSA-j7r8-r87g-9m3j
References
More kcseopro vulnerabilities
- TI-2025-38440 WordPress AdWords Conversion Tracking Code plugin <= 1.0 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
- TI-2026-03108 Cross-site scripting in kcseopro WP SEO Structured Data Schema CVSS 3.1MEDIUM 4.9
Sources
- CVE-2025-4127 · CVE Program
- CVE-2025-4127 · NVD
- FIRST EPSS
- GHSA-j7r8-r87g-9m3j · 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