themefusion Avada Builder Plugin up to 3.15.1 on WordPress Dynamic Data Feature fusion_get_post_custom_field authorization

Summaryinfo

A vulnerability marked as problematic has been reported in themefusion Avada Builder Plugin up to 3.15.1 on WordPress. The affected element is the function fusion_get_post_custom_field of the component Dynamic Data Feature. Performing a manipulation of the argument post_custom_field results in authorization. This vulnerability is reported as CVE-2026-1541. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in themefusion Avada Builder Plugin up to 3.15.1 on WordPress. This affects the function fusion_get_post_custom_field of the component Dynamic Data Feature. The manipulation of the argument post_custom_field with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality. The summary by CVE is:

The Avada (Fusion) Builder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.15.1. This is due to the plugin's `fusion_get_post_custom_field()` function failing to validate whether metadata keys are protected (underscore-prefixed). This makes it possible for authenticated attackers, with Subscriber-level access and above, to extract protected post metadata fields that should not be publicly accessible via the Dynamic Data feature's `post_custom_field` parameter.

The weakness was disclosed by Craig Smith. It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-1541 since 01/28/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/16/2026).

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

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202604-3302). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• themefusion

Name

• Avada Builder Plugin

Version

• 3.15.0
• 3.15.1

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion