CVE-2026-120513

Everest Forms <= 3.6.2 - Unauthenticated Arbitrary File Deletion via 'everest_forms_{form_id}_old_{field_id}' Parameter

2026-11-09 18:20
SAHRAOUI AYMEN

Strategic Overview

Status
Patched in 3.6.3
Affected Plugin
Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI
Affected Version
<= 3.6.2
CVSS
8.2High
Weakness type
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory
CVE
CVE-2026-120513
View all Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI vulnerabilities

At a glance

CVE-2026-120513 is a high-severity Improper Limitation of a Pathname to a Restricted Directory vulnerability in the Everest Forms WordPress plugin, affecting versions <= 3.6.2. It carries a CVSS score of 8.2 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 3.6.3; sites on affected versions should update now. Disclosed November 2026, reported by SAHRAOUI AYMEN.

Vulnerability Overview

The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to file deletion due to insufficient file path validation in the remove_csv_file_after_email_send function in all versions up to, and including, 3.6.2 This makes it possible for unauthenticated attackers to delete files within the wp-content/uploads directory on the server, which can lead to loss of uploaded content. On hardened Apache configurations, deletion of uploads/.htaccess can re-enable PHP execution inside the uploads directory. This attack is only possible when the Save-and-Continue addon is active (EVF_SAVE_AND_CONTINUE_VERSION is defined) and the 'Disable storing entry information' setting is enabled on the target form. Escaping the uploads directory and deleting files in the site root can be possible under rare circumstances.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on integrity.

CWE-22: Improper Limitation of a Pathname to a Restricted Directory

Reaching this weakness in Everest Forms <= 3.6.2 takes no account at all. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.

Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For Everest Forms the fix is 3.6.3: builds <= 3.6.2 are affected, anything from 3.6.3 onward is not.

Remediation

Update to version 3.6.3, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Everest Forms 3.6.3 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-120513https://www.wordfence.com/threat-intel/vulnerabilities/id/0d61468b-8fda-4775-8099-a34ddf34566bhttps://nvd.nist.gov/vuln/detail/CVE-2026-120513

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C