Fluent Forms <= 6.2.1 - Authenticated (Administrator+) Arbitrary File Read via Path Traversal in Email Attachment
The Fluent Forms plugin for WordPress is vulnerable to Arbitrary File Read in versions up to and including 6.2.1. This is due to insufficient path validation in the getAttachments() method of EmailNotificationActions, which resolves attacker-supplied file-upload URLs into filesystem paths without verifying that the resolved path stays inside the WordPress uploads directory: a strpos() prefix check on the raw URL can be bypassed with traversal sequences, wp_normalize_path() does not resolve "..." segments, and file_exists() then resolves them at the kernel level. This makes it possible for authenticated attackers with administrator access to read arbitrary files readable by the web-server user — including wp-config.php with its database credentials and authentication salts — by submitting a form whose admin notification is configured to attach a file-upload field and supplying a crafted URL of the shape <upload_baseurl>/../../<target> as the file-field value. The resolved file is attached to the outbound admin-notification email via wp_mail(). While the email can be triggered by unauthenticated users, the email recipient is not user-controlled.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder | <= 6.2.1 | 6.2.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-22- Platform
- WordPress
- Package
Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder- Disclosed
- 05.05.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 0101113b-70c2-4db4-b6b1-b2412f6e1214 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 45
- First → latest
- 06.2021 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 10
- Medium 34
Disclosures per year
- 2021: 1
- 2022: 1
- 2023: 3
- 2024: 15
- 2025: 4
- 2026: 21
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Fluent Forms <= 6.2.1 - Authenticated (Administrator+) Arbitrary File Read via Path Traversal in Email Attachment this entry
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