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CVE-2026-2899— Fluent Forms Pro Add On Pack <= 6.1.17 - Missing Authorization to Unauthenticated Arbitrary Attachment Deletion

Quick assessment

Affected
techjewel Fluent Forms Pro Add On Pack
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Fluent Forms Pro Add On Pack 6.1.17及之前版本存在安全漏洞，该漏洞源于Uploader类中deleteFile方法缺少随机数验证和能力检查，可能导致未经验证的攻击者删除任意WordP

CVSS 6.5 · Medium EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-2899

Vulnerability Information
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Vulnerability Title
Fluent Forms Pro Add On Pack <= 6.1.17 - Missing Authorization to Unauthenticated Arbitrary Attachment Deletion
Source: CVE Program / CVE List V5
Vulnerability Description
The Fluent Forms Pro Add On Pack plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 6.1.17. This is due to the `deleteFile()` method in the `Uploader` class lacking nonce verification and capability checks. The AJAX action is registered via `addPublicAjaxAction()` which creates both `wp_ajax_` and `wp_ajax_nopriv_` hooks. This makes it possible for unauthenticated attackers to delete arbitrary WordPress media attachments via the `attachment_id` parameter. Note: The researcher described file deletion via the `path` parameter using `sanitize_file_name()`, but the actual code uses `Protector::decrypt()` for path-based deletion which prevents exploitation. The vulnerability is exploitable via the `attachment_id` parameter instead.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Fluent Forms Pro Add On Pack 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Fluent Forms Pro Add On Pack 6.1.17及之前版本存在安全漏洞，该漏洞源于Uploader类中deleteFile方法缺少随机数验证和能力检查，可能导致未经验证的攻击者删除任意WordP
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
techjewel Fluent Forms Pro Add On Pack * ~ 6.1.17 -

II. Public POCs for CVE-2026-2899

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III. Intelligence Information for CVE-2026-2899

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Vendor Advisories for CVE-2026-2899 (1)

Vendor Pages for CVE-2026-2899 (1)

IV. Related Vulnerabilities

Same product: Fluent Forms Pro Add On Pack
Same vendor: techjewel
Same weakness: CWE-862

V. Comments for CVE-2026-2899

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