CVE-2026-1543: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in themefusion Avada (Fusion) Builder
The Avada (Fusion) Builder WordPress plugin up to version 3. 15. 2 contains a stored cross-site scripting (XSS) vulnerability due to insufficient input sanitization and output escaping in multiple shortcodes. Authenticated users with Subscriber-level access or higher can inject malicious scripts that execute when dynamic user data is viewed, potentially affecting administrators or other users viewing the content. The vulnerability has a CVSS 3. 1 score of 6. 4, indicating medium severity. No official patch or remediation guidance has been provided yet, and no known exploits are reported in the wild.
AI Analysis
Technical Summary
CVE-2026-1543 is a stored cross-site scripting vulnerability in the Avada (Fusion) Builder plugin for WordPress affecting all versions up to 3.15.2. The issue arises from improper neutralization of input in multiple shortcodes, allowing authenticated users with at least Subscriber privileges to inject arbitrary web scripts. These scripts execute when dynamic user data, such as biographical information, is rendered on pages, potentially impacting users who view such pages. The vulnerability is classified under CWE-79 and has a CVSS v3.1 base score of 6.4, reflecting a medium severity level. No vendor advisory or patch information is currently available.
Potential Impact
An attacker with Subscriber-level or higher access can inject persistent malicious scripts into pages via shortcodes. These scripts execute in the context of users viewing the affected pages, typically administrators, which can lead to limited confidentiality and integrity impacts such as session hijacking or unauthorized actions within the WordPress admin interface. There is no reported impact on availability. No known exploits in the wild have been documented.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Subscriber-level access to trusted users only and consider disabling or limiting use of the affected shortcodes or the Dynamic Data feature in the Avada Builder. Monitor official ThemeFusion channels for updates and apply patches promptly once available.
CVE-2026-1543: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in themefusion Avada (Fusion) Builder
Description
The Avada (Fusion) Builder WordPress plugin up to version 3. 15. 2 contains a stored cross-site scripting (XSS) vulnerability due to insufficient input sanitization and output escaping in multiple shortcodes. Authenticated users with Subscriber-level access or higher can inject malicious scripts that execute when dynamic user data is viewed, potentially affecting administrators or other users viewing the content. The vulnerability has a CVSS 3. 1 score of 6. 4, indicating medium severity. No official patch or remediation guidance has been provided yet, and no known exploits are reported in the wild.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1543 is a stored cross-site scripting vulnerability in the Avada (Fusion) Builder plugin for WordPress affecting all versions up to 3.15.2. The issue arises from improper neutralization of input in multiple shortcodes, allowing authenticated users with at least Subscriber privileges to inject arbitrary web scripts. These scripts execute when dynamic user data, such as biographical information, is rendered on pages, potentially impacting users who view such pages. The vulnerability is classified under CWE-79 and has a CVSS v3.1 base score of 6.4, reflecting a medium severity level. No vendor advisory or patch information is currently available.
Potential Impact
An attacker with Subscriber-level or higher access can inject persistent malicious scripts into pages via shortcodes. These scripts execute in the context of users viewing the affected pages, typically administrators, which can lead to limited confidentiality and integrity impacts such as session hijacking or unauthorized actions within the WordPress admin interface. There is no reported impact on availability. No known exploits in the wild have been documented.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Subscriber-level access to trusted users only and consider disabling or limiting use of the affected shortcodes or the Dynamic Data feature in the Avada Builder. Monitor official ThemeFusion channels for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-01-28T15:09:53.304Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0e9226ba1db473621d1456
Added to database: 5/21/2026, 5:03:34 AM
Last enriched: 5/21/2026, 5:18:40 AM
Last updated: 5/21/2026, 7:18:04 AM
Views: 4
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