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 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).

CVSS v3.1

6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS

0.34% chance of exploitation in the next 30 days, 26th percentile

Nuclei

low

Published

2026-05-21

Nuclei templates (1)

• topscoder/nuclei-wordfence-cve/blob/main/nuclei-templates/2026/CVE-2026-1543-fusion_build…

References

• CVE Record
• NVD entry

Related

• CVE-2026-15423
• CVE-2026-15430
• CVE-2026-1542
• CVE-2026-1544
• CVE-2026-15413
• CVE-2026-1545