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Vulnerability record · CVE-2026-13369 · published 2 July 2026

CVE-2026-13369: Path traversal vulnerability

The Ninja Forms - File Uploads plugin for WordPress is vulnerable to Arbitrary File Read via the attach_files() function in versions up to, and including, 3.3.29. This is due to the get_files_for_attachment() function accepting a raw attacker-controlled 'files' array when the process() method returns early due to a client-supplied saveProgress flag, bypassing all upload validation, path normalization, and database record creation steps, and allowing an attacker-supplied file_path value to reach wp_mail() as an email attachment with only a file_exists() check. This makes it possible for unauthenticated attackers to read arbitrary files on the affected site's server.

7.5 CVSS 3.1 High EPSS 0.60% · top 53.5% CWE-22 · Path traversal Deferred
7.5CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
2 Jul 2026Last modified by NVD

Description

The Ninja Forms - File Uploads plugin for WordPress is vulnerable to Arbitrary File Read via the attach_files() function in versions up to, and including, 3.3.29. This is due to the get_files_for_attachment() function accepting a raw attacker-controlled 'files' array when the process() method returns early due to a client-supplied saveProgress flag, bypassing all upload validation, path normalization, and database record creation steps, and allowing an attacker-supplied file_path value to reach wp_mail() as an email attachment with only a file_exists() check. This makes it possible for unauthenticated attackers to read arbitrary files on the affected site's server.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

LinkTags
https://plugins.trac.wordpress.org/browser/ninja-forms-uploads/trunk/includes/fields/upload.php#L71
https://plugins.trac.wordpress.org/browser/ninja-forms-uploads/trunk/includes/integrations/ninjaforms/attachments.php#L1
https://plugins.trac.wordpress.org/browser/ninja-forms-uploads/trunk/includes/integrations/ninjaforms/attachments.php#L1
https://www.wordfence.com/threat-intel/vulnerabilities/id/87d4dd4a-b1e2-4d08-aef1-77e58aa7531d?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-13369), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.