CVE-2026-1541: CWE-639 Authorization Bypass Through User-Controlled Key in themefusion Avada (Fusion) Builder
The Avada (Fusion) Builder WordPress plugin up to version 3. 15. 1 contains a vulnerability that allows authenticated users with Subscriber-level access or higher to access protected post metadata fields. This occurs because the plugin's function fusion_get_post_custom_field() does not properly validate underscore-prefixed metadata keys, which are intended to be protected. The vulnerability results in sensitive information exposure but does not affect integrity or availability.
AI Analysis
Technical Summary
CVE-2026-1541 is a medium-severity vulnerability in the Avada (Fusion) Builder WordPress plugin where the function fusion_get_post_custom_field() fails to enforce access controls on underscore-prefixed metadata keys. Authenticated users with low privileges can exploit the Dynamic Data feature's post_custom_field parameter to retrieve protected post metadata that should remain inaccessible. This is classified under CWE-639 (Authorization Bypass Through User-Controlled Key). No known exploits are reported, and no official patch or remediation level has been published as of the data provided.
Potential Impact
The vulnerability allows disclosure of sensitive post metadata to authenticated users with Subscriber-level privileges or higher. This exposure is limited to confidentiality impact only, with no direct impact on data integrity or system availability. The CVSS v3.1 base score is 4.3, reflecting a medium severity level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Subscriber-level user access where possible and monitor for updates from ThemeFusion. Avoid exposing sensitive metadata through the Dynamic Data feature. No official remediation or temporary fix has been published at this time.
CVE-2026-1541: CWE-639 Authorization Bypass Through User-Controlled Key in themefusion Avada (Fusion) Builder
Description
The Avada (Fusion) Builder WordPress plugin up to version 3. 15. 1 contains a vulnerability that allows authenticated users with Subscriber-level access or higher to access protected post metadata fields. This occurs because the plugin's function fusion_get_post_custom_field() does not properly validate underscore-prefixed metadata keys, which are intended to be protected. The vulnerability results in sensitive information exposure but does not affect integrity or availability.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1541 is a medium-severity vulnerability in the Avada (Fusion) Builder WordPress plugin where the function fusion_get_post_custom_field() fails to enforce access controls on underscore-prefixed metadata keys. Authenticated users with low privileges can exploit the Dynamic Data feature's post_custom_field parameter to retrieve protected post metadata that should remain inaccessible. This is classified under CWE-639 (Authorization Bypass Through User-Controlled Key). No known exploits are reported, and no official patch or remediation level has been published as of the data provided.
Potential Impact
The vulnerability allows disclosure of sensitive post metadata to authenticated users with Subscriber-level privileges or higher. This exposure is limited to confidentiality impact only, with no direct impact on data integrity or system availability. The CVSS v3.1 base score is 4.3, reflecting a medium severity level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Subscriber-level user access where possible and monitor for updates from ThemeFusion. Avoid exposing sensitive metadata through the Dynamic Data feature. No official remediation or temporary fix has been published at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-01-28T14:57:30.708Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69deee0b82d89c981fde9f24
Added to database: 4/15/2026, 1:46:51 AM
Last enriched: 4/22/2026, 6:44:29 AM
Last updated: 5/31/2026, 12:31:51 AM
Views: 84
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