Vulnerability Description
The SiteOrigin Widgets Bundle plugin for WordPress is vulnerable to unauthorized arbitrary shortcode execution in all versions up to, and including, 1.70.4. This is due to a missing capability check on the `siteorigin_widget_preview_widget_action()` function which is registered via the `wp_ajax_so_widgets_preview` AJAX action. The function only verifies a nonce (`widgets_action`) but does not check user capabilities. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes by invoking the `SiteOrigin_Widget_Editor_Widget` via the preview endpoint. The required nonce is exposed on the public frontend when the Post Carousel widget is present on a page, embedded in the `data-ajax-url` HTML attribute.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/so-widgets-bundle/tags/1.70.4/base/in
- https://plugins.trac.wordpress.org/browser/so-widgets-bundle/tags/1.70.4/base/in
- https://plugins.trac.wordpress.org/browser/so-widgets-bundle/tags/1.70.4/widgets
- https://plugins.trac.wordpress.org/browser/so-widgets-bundle/tags/1.70.4/widgets
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new
- https://www.wordfence.com/threat-intel/vulnerabilities/id/bf92c64b-ca76-4af7-a1e
FAQ
What is CVE-2026-2127?
CVE-2026-2127 is a vulnerability with a CVSS score of 5.4 (MEDIUM). The SiteOrigin Widgets Bundle plugin for WordPress is vulnerable to unauthorized arbitrary shortcode execution in all versions up to, and including, 1.70.4. This is due to a missing capability check o...
How severe is CVE-2026-2127?
CVE-2026-2127 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-2127?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.