Stored cross-site scripting in Schema & Structured Data for WP & AMP
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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 & Structured Data for WP & AMP plugin for WordPress, from 0 through 1.67, contains stored cross-site scripting via the saswp_review_text parameter (CWE-79) due to insufficient input sanitization and output escaping. An unauthenticated attacker can inject arbitrary web scripts into pages that run whenever a user accesses the injected page. The nonce that serves as the only authorization gate is printed publicly in the saswp-reviews-form shortcode HTML, so it provides no real access control.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The Schema & Structured Data for WP & AMP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'saswp_review_text' parameter in all versions up to, and including, 1.67 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nonce that serves as the only authorization gate is publicly printed in the [saswp-reviews-form] shortcode HTML, making it obtainable by any anonymous visitor and rendering it ineffective as an access control boundary.
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
Remediation
The sources list no fixed version for Schema & Structured Data for WP & AMP.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-16 Threatist record created from CVE-2026-96570
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: MEDIUM → LOW
- 2026-10-16 Alias added: GHSA-cmj8-gm9j-p86q
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1285322f-be3a-4015-b96d-79589a0897c8?source=cve
- https://plugins.trac.wordpress.org/browser/schema-and-structured-data-for-wp/tags/1.66/modules/reviews/class-saswp-reviews-admin.php#L258
- https://plugins.trac.wordpress.org/browser/schema-and-structured-data-for-wp/tags/1.66/modules/reviews/class-saswp-reviews-admin.php#L159
- https://plugins.trac.wordpress.org/browser/schema-and-structured-data-for-wp/tags/1.66/admin_section/common-function.php#L1874
- https://plugins.trac.wordpress.org/browser/schema-and-structured-data-for-wp/tags/1.66/admin_section/common-function.php#L5158
- https://plugins.trac.wordpress.org/browser/schema-and-structured-data-for-wp/tags/1.66/modules/reviews/class-saswp-reviews-service.php#L126
- https://plugins.trac.wordpress.org/browser/schema-and-structured-data-for-wp/tags/1.66/modules/reviews/class-saswp-reviews-form.php#L170
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3740790%40schema-and-structured-data-for-wp&new=3740790%40schema-and-structured-data-for-wp
More magazine3 vulnerabilities
- TI-2024-05177 Easy Table of Contents < 2.0.66 - Admin+ Stored XSS CVSS 3.1MEDIUM 5.9
- TI-2024-07193 PWA For WP & AMP < 1.7.72 Administrator+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2021-03211 PWA for WP & AMP <= 1.7.32 - Arbitrary File Upload CVSS 3.1HIGH 8.8
- TI-2026-64022 WordPress Schema & Structured Data for WP & AMP plugin <= 1.66 - PHP Object Injection vulnerability CVSS 3.1HIGH 8.8
- TI-2024-31636 WordPress PWA for WP & AMP plugin <= 1.7.72 - Broken Access Control vulnerability CVSS 3.1HIGH 8.8
- TI-2025-31355 WordPress WP Multilang plugin <= 2.4.19 - Local File Inclusion Vulnerability CVSS 3.1HIGH 7.5
Sources
- CVE-2026-96570 · CVE Program
- CVE-2026-96570 · NVD
- FIRST EPSS
- GHSA-cmj8-gm9j-p86q · 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