Arbitrary File Upload Vulnerability in Multi Uploader for Gravity Forms Plugin by WordPress
CVE-2026-87796

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Multi Uploader For Gravity Forms
Vendor
CVE Published:
17 September 2026

What is CVE-2026-87796?

The Multi Uploader for Gravity Forms plugin for WordPress is susceptible to an arbitrary file upload vulnerability due to a failure in proper file type validation during the chunked upload process. This weakness allows unauthorized attackers to upload any file to the server hosting the website, potentially facilitating remote code execution and compromising the site's security. It is crucial for users of this plugin to immediately assess their systems and implement necessary updates or mitigations to safeguard against potential exploits.

Affected Version(s)

Multi Uploader for Gravity Forms 0 <= 1.1.9

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/gf-multi-uploa...
https://plugins.trac.wordpress.org/browser/gf-multi-uploa...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Adam Rayyan Aryasatya
.