Unauthenticated Cross Site Scripting in Ninja Forms File Uploads Extension by WordPress
CVE-2026-81773

7.1HIGH

Key Information:

Vendor

WordPress
Status
Ninja Forms File Uploads Extension
Vendor
CVE Published:
3 September 2026

What is CVE-2026-81773?

The Ninja Forms File Uploads Extension for WordPress is susceptible to an unauthenticated Cross Site Scripting (XSS) vulnerability in versions 3.3.26 and earlier. Malicious actors can exploit this weakness to inject arbitrary scripts into web pages viewed by users, potentially leading to session hijacking or other harmful actions. It is crucial for administrators and developers to apply security measures and keep plugins updated to mitigate the risks associated with this vulnerability.

Affected Version(s)

Ninja Forms File Uploads Extension <= 3.3.26

References

https://patchstack.com/database/wordpress/plugin/ninja-fo...
vdb-entry

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Marc-André Beaulieu (h3dg3h0g) | Patchstack Bug Bounty Program
.