CVE-2026-6344 json
Fluent Forms <= 6.2.1 - Authenticated (Administrator+) Arbitrary File Read via Path Traversal in Email Attachment
published 2026-05-06 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-27536
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
Affected products
- techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/0101113b-70c2-4db4-b6b1-b2412f6e1214?source=cve
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Services/FormBuilder/Notifications/EmailNotificationActions.php#L121
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Services/FormBuilder/Notifications/EmailNotificationActions.php#L130
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Services/FormBuilder/Notifications/EmailNotificationActions.php#L133
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Services/FormBuilder/Notifications/EmailNotificationActions.php#L135
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Services/FormBuilder/Notifications/EmailNotificationActions.php#L137
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Services/FormBuilder/Notifications/EmailNotificationActions.php#L151
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Hooks/Ajax.php#L17
- plugins.trac.wordpress.org /browser/fluentform/trunk/app/Modules/SubmissionHandler/SubmissionHandler.php#L17
- plugins.trac.wordpress.org /changeset/3513845/fluentform/trunk/app/Services/FormBuilder/Notifications/EmailNotificationActions.php
Sources
- CVE List CVE-2026-6344
- NVD CVE-2026-6344
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.