Description
The Related Posts by Taxonomy plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'related_posts_by_tax' shortcode in all versions up to, and including, 2.7.6 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Metrics
CVSS 3.1 6.4/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| keesiemeijer | Related Posts by Taxonomy | <= 2.7.6 |
References
- https://plugins.trac.wordpress.org/browser/related-posts-by-taxonomy/tags/2.7.6/includes/functions.php#L259
- https://plugins.trac.wordpress.org/browser/related-posts-by-taxonomy/tags/2.7.7/includes/functions.php#L259
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0582fe7d-884c-4019-837a-861d36ccc842?source=cve
Timeline
- Published
- Jan 16, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Deferred