Strategy11 Formidable Digital Signatures Plugin up to 3.0.6 on WordPress delete_file item_meta[field_id][content] path traversal

Summaryinfo

A vulnerability was found in Strategy11 Formidable Digital Signatures Plugin up to 3.0.6. It has been classified as critical. Impacted is the function delete_file. The manipulation of the argument item_meta[field_id][content] leads to path traversal. This vulnerability is uniquely identified as CVE-2026-16230. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Strategy11 Formidable Digital Signatures Plugin up to 3.0.6. It has been rated as critical. This issue affects the function delete_file. The manipulation of the argument item_meta[field_id][content] with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is integrity, and availability. The summary by CVE is:

The Formidable Digital Signatures plugin for WordPress is vulnerable to file deletion due to insufficient file path validation in the delete_file function in all versions up to, and including, 3.0.6. This makes it possible for unauthenticated attackers to delete files on the server by supplying an attacker-controlled filename in the item_meta[field_id][content] parameter alongside the delete_saved_image flag during the standard entry-creation POST flow on any form that accepts anonymous submissions.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-16230 since 07/18/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/11/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• Strategy11

Name

• Formidable Digital Signatures Plugin

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6

CPE 2.3info

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CPE 2.2info

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