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CVE-2026-16230— Formidable Digital Signatures <= 3.0.6 - Unauthenticated Arbitrary File Deletion via Signature Field

Quick assessment

Affected
Strategy11 Formidable Digital Signatures
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Formidable Digital Signatures是WordPress基金会的一款提供数字签名功能的CMS插件。 WordPress Formidable Digital Signatures 3.0.6及之前版本存在路径遍历漏洞，该漏洞源于delete_file函数中文件路径验证不足，可能导致未经身份验证的攻击者通过提交攻击者控制的文件名及delete_saved_image标志，在标准条目创建POST流程中删除服务器上的文件。

CVSS 9.8 · Critical EPSS 0.50% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
Strategy11 Formidable Digital Signatures ≤ 3.0.6 affected
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I. Basic Information for CVE-2026-16230

Vulnerability Information
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Vulnerability Title
Formidable Digital Signatures <= 3.0.6 - Unauthenticated Arbitrary File Deletion via Signature Field
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Formidable Digital Signatures 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Formidable Digital Signatures是WordPress基金会的一款提供数字签名功能的CMS插件。 WordPress Formidable Digital Signatures 3.0.6及之前版本存在路径遍历漏洞，该漏洞源于delete_file函数中文件路径验证不足，可能导致未经身份验证的攻击者通过提交攻击者控制的文件名及delete_saved_image标志，在标准条目创建POST流程中删除服务器上的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Strategy11 Formidable Digital Signatures 0 ~ 3.0.6 -

II. Public POCs for CVE-2026-16230

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III. Intelligence Information for CVE-2026-16230

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Vendor Advisories for CVE-2026-16230 (1)

Vendor Pages for CVE-2026-16230 (2)

IV. Related Vulnerabilities

Same weakness: CWE-23

V. Comments for CVE-2026-16230

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