wpeverest Everest Forms Plugin up to 3.6.3 on WordPress Email Attachment attach_entry_files path traversal

Summaryinfo

A vulnerability, which was classified as problematic, has been found in wpeverest Everest Forms Plugin up to 3.6.3. This vulnerability affects the function attach_entry_files of the component Email Attachment Handler. The manipulation leads to path traversal. This vulnerability is listed as CVE-2026-115483. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in wpeverest Everest Forms Plugin up to 3.6.3. It has been rated as problematic. This issue affects the function attach_entry_files of the component Email Attachment Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

The Everest Forms plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to, and including, 3.6.3 via the attach_entry_files() function. This is due to the function attaching any entry field value whose meta key matches /signature_/ to the notification email after only a file_exists() check, without validating or restricting the path. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, such as wp-config.php, which can contain sensitive information. Successful exploitation requires a form whose email notification has the “Attach Files” setting enabled and that contains a field with a meta key matching /signature_/ (for example, a text field labelled “Signature”), with the notification routed to an attacker-supplied email address so the exfiltrated file is delivered to the attacker. Note: The Everest Forms Pro add-on is required to exploit this vulnerability, as it provides the signature field and the email file-attachment functionality (file-email-attachments) that the attack relies on.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-115483 since 10/22/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/10/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• wpeverest

Name

• Everest Forms Plugin

Version

• 3.6.0
• 3.6.1
• 3.6.2
• 3.6.3

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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