PT-2026-42394 · Themefusion · Avada (Fusion) Builder

Craig Smith · Published 2026-05-21 · Updated 2026-05-21 · CVE-2026-1543

NVD

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple shortcodes in all versions up to, and including, 3.15.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user (typically an administrator) accesses a page displaying dynamic user data (such as via the Dynamic Data feature pulling user biographical information).

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-1543

Affected Products

Avada (Fusion) Builder

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-1543 · Security Note
• https://avada.com/documentation/avada-changelog · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/72a6b040-ed02-4561-82f2-4adb820bdf7d?source=cve · Note
• https://themeforest.net/item/avada-responsive-multipurpose-theme/2833226 · Note