wpeverest Everest Forms Plugin up to 3.4.3 on WordPress html-admin-page-entries-view.php unserialize deserialization

Summaryinfo

A vulnerability, which was classified as critical, has been found in wpeverest Everest Forms Plugin up to 3.4.3 on WordPress. Impacted is the function unserialize of the file html-admin-page-entries-view.php. Performing a manipulation results in deserialization. This vulnerability is known as CVE-2026-3296. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in wpeverest Everest Forms Plugin up to 3.4.3 on WordPress. It has been classified as critical. This affects the function unserialize of the file html-admin-page-entries-view.php. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Everest Forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.4.3 via deserialization of untrusted input from form entry metadata. This is due to the html-admin-page-entries-view.php file calling PHP's native unserialize() on stored entry meta values without passing the allowed_classes parameter. This makes it possible for unauthenticated attackers to inject a serialized PHP object payload through any public Everest Forms form field. The payload survives sanitize_text_field() sanitization (serialization control characters are not stripped) and is stored in the wp_evf_entrymeta database table. When an administrator views entries or views an individual entry, the unsafe unserialize() call processes the stored data without class restrictions.

The weakness was published by Karuppiah Sabari Kumar. The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-3296 since 02/26/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

By approaching the search of inurl:html-admin-page-entries-view.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.4.3 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• wpeverest

Name

• Everest Forms Plugin

Version

• 3.4.0
• 3.4.1
• 3.4.2
• 3.4.3

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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