Vulnerability Description
The Multi Uploader for Gravity Forms plugin for WordPress is vulnerable to unauthorized arbitrary media deletion in all versions up to, and including, 1.1.8. This is due to missing capability checks in the `plupload_ajax_delete_file()` function, which is registered via `wp_ajax_nopriv_gfmu_delete_file`. The nonce intended for CSRF protection is exposed on any public-facing page containing a multi-uploader form field via the `GFMU_options` JavaScript object. This makes it possible for unauthenticated attackers to permanently delete any WordPress media attachment by supplying its attachment ID, potentially leading to complete media library destruction.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/gf-multi-uploader/tags/1.1.8/GFMUAddo
- https://plugins.trac.wordpress.org/browser/gf-multi-uploader/tags/1.1.8/inc/GFMU
- https://plugins.trac.wordpress.org/browser/gf-multi-uploader/trunk/GFMUAddon.cla
- https://plugins.trac.wordpress.org/browser/gf-multi-uploader/trunk/inc/GFMUHandl
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new
- https://www.wordfence.com/threat-intel/vulnerabilities/id/16dca898-1a98-4e0b-8f4
FAQ
What is CVE-2026-5581?
CVE-2026-5581 is a vulnerability with a CVSS score of 9.1 (CRITICAL). The Multi Uploader for Gravity Forms plugin for WordPress is vulnerable to unauthorized arbitrary media deletion in all versions up to, and including, 1.1.8. This is due to missing capability checks i...
How severe is CVE-2026-5581?
CVE-2026-5581 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-5581?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.