XSS in Themefusion Avada (Fusion) Builder
CVE-2026-1543
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 pos…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (1.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Themefusion Avada (Fusion) Builder — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-1543?
- CVE-2026-1543 is a medium-severity vulnerability in Themefusion Avada (Fusion) Builder, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-05-21.
- How severe is CVE-2026-1543?
- Medium severity. CVSS v3 base score is 6.4 out of 10.