CVE-2026-81773
Deferred Deferred - Pending Action

Unauthenticated XSS in Ninja Forms File Uploads Extension

Publication date: 2026-09-03

Last updated on: 2026-09-03

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in Ninja Forms File Uploads Extension <= 3.3.26 versions.

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Meta Information

Published
2026-09-03
Last Modified
2026-09-03
Generated
2026-09-03
AI Q&A
2026-09-03
EPSS Evaluated
N/A
NVD
CVE-2026-81773
EUVD
EUVD-2026-70564

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
ninja_forms file_uploads_extension to 3.3.26 (inc)
ninja_forms ninja_forms_file_uploads_extension to 3.3.26 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability found in the Ninja Forms File Uploads Extension versions 3.3.26 and below. It allows attackers to inject malicious scripts into web pages viewed by other users without needing authentication.

Detection Guidance

Detecting this XSS vulnerability requires checking if the Ninja Forms File Uploads Extension version is <= 3.3.26. Inspect the WordPress plugins directory for the extension version. No specific commands are provided in the context.

Impact Analysis

An attacker could exploit this to steal user session cookies, redirect users to malicious sites, or perform actions on behalf of users. This could lead to unauthorized data access, account takeovers, or defacement of the website.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Organizations may face compliance violations, fines, or legal consequences if exploited.

Mitigation Strategies

Update the Ninja Forms File Uploads Extension to the latest version to patch the vulnerability. If updating is not possible, consider disabling the extension temporarily until a patch is applied.

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